banboshi_V2/HalftoneWeb/node_modules/vue3-browser-compiler-yx/dist/compiler-sfc.cjs.js

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var CompilerDOM = require('@vue/compiler-dom');
var sourceMap = require('source-map');
var hash = require('hash-sum');
var path = require('path');
var compilerCore = require('@vue/compiler-core');
var url = require('url');
var shared = require('@vue/shared');
var CompilerSSR = require('@vue/compiler-ssr');
var postcss = require('postcss');
var selectorParser = require('postcss-selector-parser');
var merge = require('merge-source-map');
var MagicString = require('magic-string');
var parser = require('@babel/parser');
var estreeWalker = require('estree-walker');

function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e['default'] : e; }

function _interopNamespace(e) {
  if (e && e.__esModule) return e;
  var n = Object.create(null);
  if (e) {
    Object.keys(e).forEach(function (k) {
      n[k] = e[k];
    });
  }
  n['default'] = e;
  return Object.freeze(n);
}

var CompilerDOM__namespace = /*#__PURE__*/_interopNamespace(CompilerDOM);
var hash__default = /*#__PURE__*/_interopDefaultLegacy(hash);
var path__default = /*#__PURE__*/_interopDefaultLegacy(path);
var CompilerSSR__namespace = /*#__PURE__*/_interopNamespace(CompilerSSR);
var postcss__default = /*#__PURE__*/_interopDefaultLegacy(postcss);
var selectorParser__default = /*#__PURE__*/_interopDefaultLegacy(selectorParser);
var merge__default = /*#__PURE__*/_interopDefaultLegacy(merge);
var MagicString__default = /*#__PURE__*/_interopDefaultLegacy(MagicString);

const CSS_VARS_HELPER = `useCssVars`;
const cssVarRE = /\bv-bind\(\s*(?:'([^']+)'|"([^"]+)"|([^'"][^)]*))\s*\)/g;
function genCssVarsFromList(vars, id, isProd) {
    return `{\n  ${vars
        .map(key => `"${genVarName(id, key, isProd)}": (${key})`)
        .join(',\n  ')}\n}`;
}
function genVarName(id, raw, isProd) {
    if (isProd) {
        return hash__default(id + raw);
    }
    else {
        return `${id}-${raw.replace(/([^\w-])/g, '_')}`;
    }
}
function parseCssVars(sfc) {
    const vars = [];
    sfc.styles.forEach(style => {
        let match;
        while ((match = cssVarRE.exec(style.content))) {
            vars.push(match[1] || match[2] || match[3]);
        }
    });
    return vars;
}
const cssVarsPlugin = opts => {
    const { id, isProd } = opts;
    return {
        postcssPlugin: 'vue-sfc-vars',
        Declaration(decl) {
            // rewrite CSS variables
            if (cssVarRE.test(decl.value)) {
                decl.value = decl.value.replace(cssVarRE, (_, $1, $2, $3) => {
                    return `var(--${genVarName(id, $1 || $2 || $3, isProd)})`;
                });
            }
        }
    };
};
cssVarsPlugin.postcss = true;
function genCssVarsCode(vars, bindings, id, isProd) {
    const varsExp = genCssVarsFromList(vars, id, isProd);
    const exp = CompilerDOM.createSimpleExpression(varsExp, false);
    const context = CompilerDOM.createTransformContext(CompilerDOM.createRoot([]), {
        prefixIdentifiers: true,
        inline: true,
        bindingMetadata: bindings
    });
    const transformed = CompilerDOM.processExpression(exp, context);
    const transformedString = transformed.type === 4 /* SIMPLE_EXPRESSION */
        ? transformed.content
        : transformed.children
            .map(c => {
            return typeof c === 'string'
                ? c
                : c.content;
        })
            .join('');
    return `_${CSS_VARS_HELPER}(_ctx => (${transformedString}))`;
}
// <script setup> already gets the calls injected as part of the transform
// this is only for single normal <script>
function genNormalScriptCssVarsCode(cssVars, bindings, id, isProd) {
    return (`\nimport { ${CSS_VARS_HELPER} as _${CSS_VARS_HELPER} } from 'vue'\n` +
        `const __injectCSSVars__ = () => {\n${genCssVarsCode(cssVars, bindings, id, isProd)}}\n` +
        `const __setup__ = __default__.setup\n` +
        `__default__.setup = __setup__\n` +
        `  ? (props, ctx) => { __injectCSSVars__();return __setup__(props, ctx) }\n` +
        `  : __injectCSSVars__\n`);
}

const hasWarned = {};
function warnOnce(msg) {
    const isNodeProd = typeof process !== 'undefined' && process.env.NODE_ENV === 'production';
    if (!isNodeProd && !false && !hasWarned[msg]) {
        hasWarned[msg] = true;
        warn(msg);
    }
}
function warn(msg) {
    console.warn(`\x1b[1m\x1b[33m[@vue/compiler-sfc]\x1b[0m\x1b[33m ${msg}\x1b[0m\n`);
}
function warnExperimental(feature, rfcId) {
    // eslint-disable-next-line
    if (typeof window !== 'undefined') {
        return;
    }
    warnOnce(`${feature} is still an experimental proposal.\n` +
        `Follow its status at https://github.com/vuejs/rfcs/pull/${rfcId}.`);
    warnOnce(`When using experimental features,\n` +
        `it is recommended to pin your vue dependencies to exact versions to avoid breakage.`);
}

const SFC_CACHE_MAX_SIZE = 500;
const sourceToSFC = new (require('lru-cache'))(SFC_CACHE_MAX_SIZE);
function parse(source, { sourceMap = true, filename = 'anonymous.vue', sourceRoot = '', pad = false, compiler = CompilerDOM__namespace } = {}) {
    const sourceKey = source + sourceMap + filename + sourceRoot + pad + compiler.parse;
    const cache = sourceToSFC.get(sourceKey);
    if (cache) {
        return cache;
    }
    const descriptor = {
        filename,
        source,
        template: null,
        script: null,
        scriptSetup: null,
        styles: [],
        customBlocks: [],
        cssVars: [],
        slotted: false
    };
    const errors = [];
    const ast = compiler.parse(source, {
        // there are no components at SFC parsing level
        isNativeTag: () => true,
        // preserve all whitespaces
        isPreTag: () => true,
        getTextMode: ({ tag, props }, parent) => {
            // all top level elements except <template> are parsed as raw text
            // containers
            if ((!parent && tag !== 'template') ||
                // <template lang="xxx"> should also be treated as raw text
                (tag === 'template' &&
                    props.some(p => p.type === 6 /* ATTRIBUTE */ &&
                        p.name === 'lang' &&
                        p.value &&
                        p.value.content &&
                        p.value.content !== 'html'))) {
                return 2 /* RAWTEXT */;
            }
            else {
                return 0 /* DATA */;
            }
        },
        onError: e => {
            errors.push(e);
        }
    });
    ast.children.forEach(node => {
        if (node.type !== 1 /* ELEMENT */) {
            return;
        }
        if (!node.children.length && !hasSrc(node) && node.tag !== 'template') {
            return;
        }
        switch (node.tag) {
            case 'template':
                if (!descriptor.template) {
                    const templateBlock = (descriptor.template = createBlock(node, source, false));
                    templateBlock.ast = node;
                }
                else {
                    errors.push(createDuplicateBlockError(node));
                }
                break;
            case 'script':
                const scriptBlock = createBlock(node, source, pad);
                const isSetup = !!scriptBlock.attrs.setup;
                if (isSetup && !descriptor.scriptSetup) {
                    descriptor.scriptSetup = scriptBlock;
                    break;
                }
                if (!isSetup && !descriptor.script) {
                    descriptor.script = scriptBlock;
                    break;
                }
                errors.push(createDuplicateBlockError(node, isSetup));
                break;
            case 'style':
                const styleBlock = createBlock(node, source, pad);
                if (styleBlock.attrs.vars) {
                    errors.push(new SyntaxError(`<style vars> has been replaced by a new proposal: ` +
                        `https://github.com/vuejs/rfcs/pull/231`));
                }
                descriptor.styles.push(styleBlock);
                break;
            default:
                descriptor.customBlocks.push(createBlock(node, source, pad));
                break;
        }
    });
    if (descriptor.scriptSetup) {
        if (descriptor.scriptSetup.src) {
            errors.push(new SyntaxError(`<script setup> cannot use the "src" attribute because ` +
                `its syntax will be ambiguous outside of the component.`));
            descriptor.scriptSetup = null;
        }
        if (descriptor.script && descriptor.script.src) {
            errors.push(new SyntaxError(`<script> cannot use the "src" attribute when <script setup> is ` +
                `also present because they must be processed together.`));
            descriptor.script = null;
        }
    }
    if (sourceMap) {
        const genMap = (block) => {
            if (block && !block.src) {
                block.map = generateSourceMap(filename, source, block.content, sourceRoot, !pad || block.type === 'template' ? block.loc.start.line - 1 : 0);
            }
        };
        genMap(descriptor.template);
        genMap(descriptor.script);
        descriptor.styles.forEach(genMap);
        descriptor.customBlocks.forEach(genMap);
    }
    // parse CSS vars
    descriptor.cssVars = parseCssVars(descriptor);
    if (descriptor.cssVars.length) {
        warnExperimental(`v-bind() CSS variable injection`, 231);
    }
    // check if the SFC uses :slotted
    const slottedRE = /(?:::v-|:)slotted\(/;
    descriptor.slotted = descriptor.styles.some(s => s.scoped && slottedRE.test(s.content));
    const result = {
        descriptor,
        errors
    };
    sourceToSFC.set(sourceKey, result);
    return result;
}
function createDuplicateBlockError(node, isScriptSetup = false) {
    const err = new SyntaxError(`Single file component can contain only one <${node.tag}${isScriptSetup ? ` setup` : ``}> element`);
    err.loc = node.loc;
    return err;
}
function createBlock(node, source, pad) {
    const type = node.tag;
    let { start, end } = node.loc;
    let content = '';
    if (node.children.length) {
        start = node.children[0].loc.start;
        end = node.children[node.children.length - 1].loc.end;
        content = source.slice(start.offset, end.offset);
    }
    const loc = {
        source: content,
        start,
        end
    };
    const attrs = {};
    const block = {
        type,
        content,
        loc,
        attrs
    };
    if (pad) {
        block.content = padContent(source, block, pad) + block.content;
    }
    node.props.forEach(p => {
        if (p.type === 6 /* ATTRIBUTE */) {
            attrs[p.name] = p.value ? p.value.content || true : true;
            if (p.name === 'lang') {
                block.lang = p.value && p.value.content;
            }
            else if (p.name === 'src') {
                block.src = p.value && p.value.content;
            }
            else if (type === 'style') {
                if (p.name === 'scoped') {
                    block.scoped = true;
                }
                else if (p.name === 'module') {
                    block.module = attrs[p.name];
                }
            }
            else if (type === 'script' && p.name === 'setup') {
                block.setup = attrs.setup;
            }
        }
    });
    return block;
}
const splitRE = /\r?\n/g;
const emptyRE = /^(?:\/\/)?\s*$/;
const replaceRE = /./g;
function generateSourceMap(filename, source, generated, sourceRoot, lineOffset) {
    const map = new sourceMap.SourceMapGenerator({
        file: filename.replace(/\\/g, '/'),
        sourceRoot: sourceRoot.replace(/\\/g, '/')
    });
    map.setSourceContent(filename, source);
    generated.split(splitRE).forEach((line, index) => {
        if (!emptyRE.test(line)) {
            const originalLine = index + 1 + lineOffset;
            const generatedLine = index + 1;
            for (let i = 0; i < line.length; i++) {
                if (!/\s/.test(line[i])) {
                    map.addMapping({
                        source: filename,
                        original: {
                            line: originalLine,
                            column: i
                        },
                        generated: {
                            line: generatedLine,
                            column: i
                        }
                    });
                }
            }
        }
    });
    return JSON.parse(map.toString());
}
function padContent(content, block, pad) {
    content = content.slice(0, block.loc.start.offset);
    if (pad === 'space') {
        return content.replace(replaceRE, ' ');
    }
    else {
        const offset = content.split(splitRE).length;
        const padChar = block.type === 'script' && !block.lang ? '//\n' : '\n';
        return Array(offset).join(padChar);
    }
}
function hasSrc(node) {
    return node.props.some(p => {
        if (p.type !== 6 /* ATTRIBUTE */) {
            return false;
        }
        return p.name === 'src';
    });
}

function isRelativeUrl(url) {
    const firstChar = url.charAt(0);
    return firstChar === '.' || firstChar === '~' || firstChar === '@';
}
const externalRE = /^https?:\/\//;
function isExternalUrl(url) {
    return externalRE.test(url);
}
const dataUrlRE = /^\s*data:/i;
function isDataUrl(url) {
    return dataUrlRE.test(url);
}
/**
 * Parses string url into URL object.
 */
function parseUrl(url) {
    const firstChar = url.charAt(0);
    if (firstChar === '~') {
        const secondChar = url.charAt(1);
        url = url.slice(secondChar === '/' ? 2 : 1);
    }
    return parseUriParts(url);
}
/**
 * vuejs/component-compiler-utils#22 Support uri fragment in transformed require
 * @param urlString an url as a string
 */
function parseUriParts(urlString) {
    // A TypeError is thrown if urlString is not a string
    // @see https://nodejs.org/api/url.html#url_url_parse_urlstring_parsequerystring_slashesdenotehost
    return url.parse(shared.isString(urlString) ? urlString : '', false, true);
}

const defaultAssetUrlOptions = {
    base: null,
    includeAbsolute: false,
    tags: {
        video: ['src', 'poster'],
        source: ['src'],
        img: ['src'],
        image: ['xlink:href', 'href'],
        use: ['xlink:href', 'href']
    }
};
const normalizeOptions = (options) => {
    if (Object.keys(options).some(key => shared.isArray(options[key]))) {
        // legacy option format which directly passes in tags config
        return {
            ...defaultAssetUrlOptions,
            tags: options
        };
    }
    return {
        ...defaultAssetUrlOptions,
        ...options
    };
};
const createAssetUrlTransformWithOptions = (options) => {
    return (node, context) => transformAssetUrl(node, context, options);
};
/**
 * A `@vue/compiler-core` plugin that transforms relative asset urls into
 * either imports or absolute urls.
 *
 * ``` js
 * // Before
 * createVNode('img', { src: './logo.png' })
 *
 * // After
 * import _imports_0 from './logo.png'
 * createVNode('img', { src: _imports_0 })
 * ```
 */
const transformAssetUrl = (node, context, options = defaultAssetUrlOptions) => {
    if (node.type === 1 /* ELEMENT */) {
        if (!node.props.length) {
            return;
        }
        const tags = options.tags || defaultAssetUrlOptions.tags;
        const attrs = tags[node.tag];
        const wildCardAttrs = tags['*'];
        if (!attrs && !wildCardAttrs) {
            return;
        }
        const assetAttrs = (attrs || []).concat(wildCardAttrs || []);
        node.props.forEach((attr, index) => {
            if (attr.type !== 6 /* ATTRIBUTE */ ||
                !assetAttrs.includes(attr.name) ||
                !attr.value ||
                isExternalUrl(attr.value.content) ||
                isDataUrl(attr.value.content) ||
                attr.value.content[0] === '#' ||
                (!options.includeAbsolute && !isRelativeUrl(attr.value.content))) {
                return;
            }
            const url = parseUrl(attr.value.content);
            if (options.base && attr.value.content[0] === '.') {
                // explicit base - directly rewrite relative urls into absolute url
                // to avoid generating extra imports
                // Allow for full hostnames provided in options.base
                const base = parseUrl(options.base);
                const protocol = base.protocol || '';
                const host = base.host ? protocol + '//' + base.host : '';
                const basePath = base.path || '/';
                // when packaged in the browser, path will be using the posix-
                // only version provided by rollup-plugin-node-builtins.
                attr.value.content =
                    host +
                        (path__default.posix || path__default).join(basePath, url.path + (url.hash || ''));
                return;
            }
            // otherwise, transform the url into an import.
            // this assumes a bundler will resolve the import into the correct
            // absolute url (e.g. webpack file-loader)
            const exp = getImportsExpressionExp(url.path, url.hash, attr.loc, context);
            node.props[index] = {
                type: 7 /* DIRECTIVE */,
                name: 'bind',
                arg: compilerCore.createSimpleExpression(attr.name, true, attr.loc),
                exp,
                modifiers: [],
                loc: attr.loc
            };
        });
    }
};
function getImportsExpressionExp(path, hash, loc, context) {
    if (path) {
        const existing = context.imports.find(i => i.path === path);
        if (existing) {
            return existing.exp;
        }
        const name = `_imports_${context.imports.length}`;
        const exp = compilerCore.createSimpleExpression(name, false, loc, 2 /* CAN_HOIST */);
        context.imports.push({ exp, path });
        if (hash && path) {
            return context.hoist(compilerCore.createSimpleExpression(`${name} + '${hash}'`, false, loc, 2 /* CAN_HOIST */));
        }
        else {
            return exp;
        }
    }
    else {
        return compilerCore.createSimpleExpression(`''`, false, loc, 2 /* CAN_HOIST */);
    }
}

const srcsetTags = ['img', 'source'];
// http://w3c.github.io/html/semantics-embedded-content.html#ref-for-image-candidate-string-5
const escapedSpaceCharacters = /( |\\t|\\n|\\f|\\r)+/g;
const createSrcsetTransformWithOptions = (options) => {
    return (node, context) => transformSrcset(node, context, options);
};
const transformSrcset = (node, context, options = defaultAssetUrlOptions) => {
    if (node.type === 1 /* ELEMENT */) {
        if (srcsetTags.includes(node.tag) && node.props.length) {
            node.props.forEach((attr, index) => {
                if (attr.name === 'srcset' && attr.type === 6 /* ATTRIBUTE */) {
                    if (!attr.value)
                        return;
                    const value = attr.value.content;
                    if (!value)
                        return;
                    const imageCandidates = value.split(',').map(s => {
                        // The attribute value arrives here with all whitespace, except
                        // normal spaces, represented by escape sequences
                        const [url, descriptor] = s
                            .replace(escapedSpaceCharacters, ' ')
                            .trim()
                            .split(' ', 2);
                        return { url, descriptor };
                    });
                    // data urls contains comma after the ecoding so we need to re-merge
                    // them
                    for (let i = 0; i < imageCandidates.length; i++) {
                        const { url } = imageCandidates[i];
                        if (isDataUrl(url)) {
                            imageCandidates[i + 1].url =
                                url + ',' + imageCandidates[i + 1].url;
                            imageCandidates.splice(i, 1);
                        }
                    }
                    const hasQualifiedUrl = imageCandidates.some(({ url }) => {
                        return (!isExternalUrl(url) &&
                            !isDataUrl(url) &&
                            (options.includeAbsolute || isRelativeUrl(url)));
                    });
                    // When srcset does not contain any qualified URLs, skip transforming
                    if (!hasQualifiedUrl) {
                        return;
                    }
                    if (options.base) {
                        const base = options.base;
                        const set = [];
                        imageCandidates.forEach(({ url, descriptor }) => {
                            descriptor = descriptor ? ` ${descriptor}` : ``;
                            if (isRelativeUrl(url)) {
                                set.push((path__default.posix || path__default).join(base, url) + descriptor);
                            }
                            else {
                                set.push(url + descriptor);
                            }
                        });
                        attr.value.content = set.join(', ');
                        return;
                    }
                    const compoundExpression = compilerCore.createCompoundExpression([], attr.loc);
                    imageCandidates.forEach(({ url, descriptor }, index) => {
                        if (!isExternalUrl(url) &&
                            !isDataUrl(url) &&
                            (options.includeAbsolute || isRelativeUrl(url))) {
                            const { path } = parseUrl(url);
                            let exp;
                            if (path) {
                                const existingImportsIndex = context.imports.findIndex(i => i.path === path);
                                if (existingImportsIndex > -1) {
                                    exp = compilerCore.createSimpleExpression(`_imports_${existingImportsIndex}`, false, attr.loc, 2 /* CAN_HOIST */);
                                }
                                else {
                                    exp = compilerCore.createSimpleExpression(`_imports_${context.imports.length}`, false, attr.loc, 2 /* CAN_HOIST */);
                                    context.imports.push({ exp, path });
                                }
                                compoundExpression.children.push(exp);
                            }
                        }
                        else {
                            const exp = compilerCore.createSimpleExpression(`"${url}"`, false, attr.loc, 2 /* CAN_HOIST */);
                            compoundExpression.children.push(exp);
                        }
                        const isNotLast = imageCandidates.length - 1 > index;
                        if (descriptor && isNotLast) {
                            compoundExpression.children.push(` + ' ${descriptor}, ' + `);
                        }
                        else if (descriptor) {
                            compoundExpression.children.push(` + ' ${descriptor}'`);
                        }
                        else if (isNotLast) {
                            compoundExpression.children.push(` + ', ' + `);
                        }
                    });
                    const hoisted = context.hoist(compoundExpression);
                    hoisted.constType = 2 /* CAN_HOIST */;
                    node.props[index] = {
                        type: 7 /* DIRECTIVE */,
                        name: 'bind',
                        arg: compilerCore.createSimpleExpression('srcset', true, attr.loc),
                        exp: hoisted,
                        modifiers: [],
                        loc: attr.loc
                    };
                }
            });
        }
    }
};

function preprocess({ source, filename, preprocessOptions }, preprocessor) {
    // Consolidate exposes a callback based API, but the callback is in fact
    // called synchronously for most templating engines. In our case, we have to
    // expose a synchronous API so that it is usable in Jest transforms (which
    // have to be sync because they are applied via Node.js require hooks)
    let res = '';
    let err = null;
    preprocessor.render(source, { filename, ...preprocessOptions }, (_err, _res) => {
        if (_err)
            err = _err;
        res = _res;
    });
    if (err)
        throw err;
    return res;
}
function compileTemplate(options) {
    const { preprocessLang, preprocessCustomRequire } = options;
    const preprocessor = preprocessLang
        ? preprocessCustomRequire
            ? preprocessCustomRequire(preprocessLang)
            : {}
        : false;
    if (preprocessor) {
        try {
            return doCompileTemplate({
                ...options,
                source: preprocess(options, preprocessor)
            });
        }
        catch (e) {
            return {
                code: `export default function render() {}`,
                source: options.source,
                tips: [],
                errors: [e]
            };
        }
    }
    else if (preprocessLang) {
        return {
            code: `export default function render() {}`,
            source: options.source,
            tips: [
                `Component ${options.filename} uses lang ${preprocessLang} for template. Please install the language preprocessor.`
            ],
            errors: [
                `Component ${options.filename} uses lang ${preprocessLang} for template, however it is not installed.`
            ]
        };
    }
    else {
        return doCompileTemplate(options);
    }
}
function doCompileTemplate({ filename, id, scoped, slotted, inMap, source, ssr = false, ssrCssVars, isProd = false, compiler = ssr ? CompilerSSR__namespace : CompilerDOM__namespace, compilerOptions = {}, transformAssetUrls }) {
    const errors = [];
    let nodeTransforms = [];
    if (shared.isObject(transformAssetUrls)) {
        const assetOptions = normalizeOptions(transformAssetUrls);
        nodeTransforms = [
            createAssetUrlTransformWithOptions(assetOptions),
            createSrcsetTransformWithOptions(assetOptions)
        ];
    }
    else if (transformAssetUrls !== false) {
        nodeTransforms = [transformAssetUrl, transformSrcset];
    }
    if (ssr && !ssrCssVars) {
        warnOnce(`compileTemplate is called with \`ssr: true\` but no ` +
            `corresponding \`cssVars\` option.\`.`);
    }
    if (!id) {
        warnOnce(`compileTemplate now requires the \`id\` option.\`.`);
        id = '';
    }
    const shortId = id.replace(/^data-v-/, '');
    const longId = `data-v-${shortId}`;
    let { code, ast, preamble, map } = compiler.compile(source, {
        mode: 'module',
        prefixIdentifiers: true,
        hoistStatic: true,
        cacheHandlers: true,
        ssrCssVars: ssr && ssrCssVars && ssrCssVars.length
            ? genCssVarsFromList(ssrCssVars, shortId, isProd)
            : '',
        scopeId: scoped ? longId : undefined,
        slotted,
        ...compilerOptions,
        nodeTransforms: nodeTransforms.concat(compilerOptions.nodeTransforms || []),
        filename,
        sourceMap: true,
        onError: e => errors.push(e)
    });
    // inMap should be the map produced by ./parse.ts which is a simple line-only
    // mapping. If it is present, we need to adjust the final map and errors to
    // reflect the original line numbers.
    if (inMap) {
        if (map) {
            map = mapLines(inMap, map);
        }
        if (errors.length) {
            patchErrors(errors, source, inMap);
        }
    }
    return { code, ast, preamble, source, errors, tips: [], map };
}
function mapLines(oldMap, newMap) {
    if (!oldMap)
        return newMap;
    if (!newMap)
        return oldMap;
    const oldMapConsumer = new sourceMap.SourceMapConsumer(oldMap);
    const newMapConsumer = new sourceMap.SourceMapConsumer(newMap);
    const mergedMapGenerator = new sourceMap.SourceMapGenerator();
    newMapConsumer.eachMapping(m => {
        if (m.originalLine == null) {
            return;
        }
        const origPosInOldMap = oldMapConsumer.originalPositionFor({
            line: m.originalLine,
            column: m.originalColumn
        });
        if (origPosInOldMap.source == null) {
            return;
        }
        mergedMapGenerator.addMapping({
            generated: {
                line: m.generatedLine,
                column: m.generatedColumn
            },
            original: {
                line: origPosInOldMap.line,
                // use current column, since the oldMap produced by @vue/compiler-sfc
                // does not
                column: m.originalColumn
            },
            source: origPosInOldMap.source,
            name: origPosInOldMap.name
        });
    });
    // source-map's type definition is incomplete
    const generator = mergedMapGenerator;
    oldMapConsumer.sources.forEach((sourceFile) => {
        generator._sources.add(sourceFile);
        const sourceContent = oldMapConsumer.sourceContentFor(sourceFile);
        if (sourceContent != null) {
            mergedMapGenerator.setSourceContent(sourceFile, sourceContent);
        }
    });
    generator._sourceRoot = oldMap.sourceRoot;
    generator._file = oldMap.file;
    return generator.toJSON();
}
function patchErrors(errors, source, inMap) {
    const originalSource = inMap.sourcesContent[0];
    const offset = originalSource.indexOf(source);
    const lineOffset = originalSource.slice(0, offset).split(/\r?\n/).length - 1;
    errors.forEach(err => {
        if (err.loc) {
            err.loc.start.line += lineOffset;
            err.loc.start.offset += offset;
            if (err.loc.end !== err.loc.start) {
                err.loc.end.line += lineOffset;
                err.loc.end.offset += offset;
            }
        }
    });
}

const trimPlugin = () => {
    return {
        postcssPlugin: 'vue-sfc-trim',
        Once(root) {
            root.walk(({ type, raws }) => {
                if (type === 'rule' || type === 'atrule') {
                    if (raws.before)
                        raws.before = '\n';
                    if ('after' in raws && raws.after)
                        raws.after = '\n';
                }
            });
        }
    };
};
trimPlugin.postcss = true;

const animationNameRE = /^(-\w+-)?animation-name$/;
const animationRE = /^(-\w+-)?animation$/;
const scopedPlugin = (id = '') => {
    const keyframes = Object.create(null);
    const shortId = id.replace(/^data-v-/, '');
    return {
        postcssPlugin: 'vue-sfc-scoped',
        Rule(rule) {
            processRule(id, rule);
        },
        AtRule(node) {
            if (/-?keyframes$/.test(node.name) &&
                !node.params.endsWith(`-${shortId}`)) {
                // register keyframes
                keyframes[node.params] = node.params = node.params + '-' + shortId;
            }
        },
        OnceExit(root) {
            if (Object.keys(keyframes).length) {
                // If keyframes are found in this <style>, find and rewrite animation names
                // in declarations.
                // Caveat: this only works for keyframes and animation rules in the same
                // <style> element.
                // individual animation-name declaration
                root.walkDecls(decl => {
                    if (animationNameRE.test(decl.prop)) {
                        decl.value = decl.value
                            .split(',')
                            .map(v => keyframes[v.trim()] || v.trim())
                            .join(',');
                    }
                    // shorthand
                    if (animationRE.test(decl.prop)) {
                        decl.value = decl.value
                            .split(',')
                            .map(v => {
                            const vals = v.trim().split(/\s+/);
                            const i = vals.findIndex(val => keyframes[val]);
                            if (i !== -1) {
                                vals.splice(i, 1, keyframes[vals[i]]);
                                return vals.join(' ');
                            }
                            else {
                                return v;
                            }
                        })
                            .join(',');
                    }
                });
            }
        }
    };
};
const processedRules = new WeakSet();
function processRule(id, rule) {
    if (processedRules.has(rule) ||
        (rule.parent &&
            rule.parent.type === 'atrule' &&
            /-?keyframes$/.test(rule.parent.name))) {
        return;
    }
    processedRules.add(rule);
    rule.selector = selectorParser__default(selectorRoot => {
        selectorRoot.each(selector => {
            rewriteSelector(id, selector, selectorRoot);
        });
    }).processSync(rule.selector);
}
function rewriteSelector(id, selector, selectorRoot, slotted = false) {
    let node = null;
    let shouldInject = true;
    // find the last child node to insert attribute selector
    selector.each(n => {
        // DEPRECATED ">>>" and "/deep/" combinator
        if (n.type === 'combinator' &&
            (n.value === '>>>' || n.value === '/deep/')) {
            n.value = ' ';
            n.spaces.before = n.spaces.after = '';
            warn(`the >>> and /deep/ combinators have been deprecated. ` +
                `Use :deep() instead.`);
            return false;
        }
        if (n.type === 'pseudo') {
            const { value } = n;
            // deep: inject [id] attribute at the node before the ::v-deep
            // combinator.
            if (value === ':deep' || value === '::v-deep') {
                if (n.nodes.length) {
                    // .foo ::v-deep(.bar) -> .foo[xxxxxxx] .bar
                    // replace the current node with ::v-deep's inner selector
                    let last = n;
                    n.nodes[0].each(ss => {
                        selector.insertAfter(last, ss);
                        last = ss;
                    });
                    // insert a space combinator before if it doesn't already have one
                    const prev = selector.at(selector.index(n) - 1);
                    if (!prev || !isSpaceCombinator(prev)) {
                        selector.insertAfter(n, selectorParser__default.combinator({
                            value: ' '
                        }));
                    }
                    selector.removeChild(n);
                }
                else {
                    // DEPRECATED usage
                    // .foo ::v-deep .bar -> .foo[xxxxxxx] .bar
                    warn(`::v-deep usage as a combinator has ` +
                        `been deprecated. Use :deep(<inner-selector>) instead.`);
                    const prev = selector.at(selector.index(n) - 1);
                    if (prev && isSpaceCombinator(prev)) {
                        selector.removeChild(prev);
                    }
                    selector.removeChild(n);
                }
                return false;
            }
            // slot: use selector inside `::v-slotted` and inject [id + '-s']
            // instead.
            // ::v-slotted(.foo) -> .foo[xxxxxxx-s]
            if (value === ':slotted' || value === '::v-slotted') {
                rewriteSelector(id, n.nodes[0], selectorRoot, true /* slotted */);
                let last = n;
                n.nodes[0].each(ss => {
                    selector.insertAfter(last, ss);
                    last = ss;
                });
                // selector.insertAfter(n, n.nodes[0])
                selector.removeChild(n);
                // since slotted attribute already scopes the selector there's no
                // need for the non-slot attribute.
                shouldInject = false;
                return false;
            }
            // global: replace with inner selector and do not inject [id].
            // ::v-global(.foo) -> .foo
            if (value === ':global' || value === '::v-global') {
                selectorRoot.insertAfter(selector, n.nodes[0]);
                selectorRoot.removeChild(selector);
                return false;
            }
        }
        if (n.type !== 'pseudo' && n.type !== 'combinator') {
            node = n;
        }
    });
    if (node) {
        node.spaces.after = '';
    }
    else {
        // For deep selectors & standalone pseudo selectors,
        // the attribute selectors are prepended rather than appended.
        // So all leading spaces must be eliminated to avoid problems.
        selector.first.spaces.before = '';
    }
    if (shouldInject) {
        const idToAdd = slotted ? id + '-s' : id;
        selector.insertAfter(
        // If node is null it means we need to inject [id] at the start
        // insertAfter can handle `null` here
        node, selectorParser__default.attribute({
            attribute: idToAdd,
            value: idToAdd,
            raws: {},
            quoteMark: `"`
        }));
    }
}
function isSpaceCombinator(node) {
    return node.type === 'combinator' && /^\s+$/.test(node.value);
}
scopedPlugin.postcss = true;

// .scss/.sass processor
const scss = (source, map, options, load) => {
    const nodeSass = load('sass');
    const finalOptions = {
        ...options,
        data: getSource(source, options.filename, options.additionalData),
        file: options.filename,
        outFile: options.filename,
        sourceMap: !!map
    };
    try {
        const result = nodeSass.renderSync(finalOptions);
        const dependencies = result.stats.includedFiles;
        if (map) {
            return {
                code: result.css.toString(),
                map: merge__default(map, JSON.parse(result.map.toString())),
                errors: [],
                dependencies
            };
        }
        return { code: result.css.toString(), errors: [], dependencies };
    }
    catch (e) {
        return { code: '', errors: [e], dependencies: [] };
    }
};
const sass = (source, map, options, load) => scss(source, map, {
    ...options,
    indentedSyntax: true
}, load);
// .less
const less = (source, map, options, load) => {
    const nodeLess = load('less');
    let result;
    let error = null;
    nodeLess.render(getSource(source, options.filename, options.additionalData), { ...options, syncImport: true }, (err, output) => {
        error = err;
        result = output;
    });
    if (error)
        return { code: '', errors: [error], dependencies: [] };
    const dependencies = result.imports;
    if (map) {
        return {
            code: result.css.toString(),
            map: merge__default(map, result.map),
            errors: [],
            dependencies: dependencies
        };
    }
    return {
        code: result.css.toString(),
        errors: [],
        dependencies: dependencies
    };
};
// .styl
const styl = (source, map, options, load) => {
    const nodeStylus = load('stylus');
    try {
        const ref = nodeStylus(source);
        Object.keys(options).forEach(key => ref.set(key, options[key]));
        if (map)
            ref.set('sourcemap', { inline: false, comment: false });
        const result = ref.render();
        const dependencies = ref.deps();
        if (map) {
            return {
                code: result,
                map: merge__default(map, ref.sourcemap),
                errors: [],
                dependencies
            };
        }
        return { code: result, errors: [], dependencies };
    }
    catch (e) {
        return { code: '', errors: [e], dependencies: [] };
    }
};
function getSource(source, filename, additionalData) {
    if (!additionalData)
        return source;
    if (shared.isFunction(additionalData)) {
        return additionalData(source, filename);
    }
    return additionalData + source;
}
const processors = {
    less,
    sass,
    scss,
    styl,
    stylus: styl
};

function compileStyle(options) {
    return doCompileStyle({
        ...options,
        isAsync: false
    });
}
function compileStyleAsync(options) {
    return doCompileStyle({ ...options, isAsync: true });
}
function doCompileStyle(options) {
    const { filename, id, scoped = false, trim = true, isProd = false, modules = false, modulesOptions = {}, preprocessLang, postcssOptions, postcssPlugins } = options;
    const preprocessor = preprocessLang && processors[preprocessLang];
    const preProcessedSource = preprocessor && preprocess$1(options, preprocessor);
    const map = preProcessedSource
        ? preProcessedSource.map
        : options.inMap || options.map;
    const source = preProcessedSource ? preProcessedSource.code : options.source;
    const shortId = id.replace(/^data-v-/, '');
    const longId = `data-v-${shortId}`;
    const plugins = (postcssPlugins || []).slice();
    plugins.unshift(cssVarsPlugin({ id: shortId, isProd }));
    if (trim) {
        plugins.push(trimPlugin());
    }
    if (scoped) {
        plugins.push(scopedPlugin(longId));
    }
    let cssModules;
    if (modules) {
        if (!options.isAsync) {
            throw new Error('[@vue/compiler-sfc] `modules` option can only be used with compileStyleAsync().');
        }
        plugins.push(require('postcss-modules')({
            ...modulesOptions,
            getJSON: (_cssFileName, json) => {
                cssModules = json;
            }
        }));
    }
    const postCSSOptions = {
        ...postcssOptions,
        to: filename,
        from: filename
    };
    if (map) {
        postCSSOptions.map = {
            inline: false,
            annotation: false,
            prev: map
        };
    }
    let result;
    let code;
    let outMap;
    // stylus output include plain css. so need remove the repeat item
    const dependencies = new Set(preProcessedSource ? preProcessedSource.dependencies : []);
    // sass has filename self when provided filename option
    dependencies.delete(filename);
    const errors = [];
    if (preProcessedSource && preProcessedSource.errors.length) {
        errors.push(...preProcessedSource.errors);
    }
    const recordPlainCssDependencies = (messages) => {
        messages.forEach(msg => {
            if (msg.type === 'dependency') {
                // postcss output path is absolute position path
                dependencies.add(msg.file);
            }
        });
        return dependencies;
    };
    try {
        result = postcss__default(plugins).process(source, postCSSOptions);
        // In async mode, return a promise.
        if (options.isAsync) {
            return result
                .then(result => ({
                code: result.css || '',
                map: result.map && result.map.toJSON(),
                errors,
                modules: cssModules,
                rawResult: result,
                dependencies: recordPlainCssDependencies(result.messages)
            }))
                .catch(error => ({
                code: '',
                map: undefined,
                errors: [...errors, error],
                rawResult: undefined,
                dependencies
            }));
        }
        recordPlainCssDependencies(result.messages);
        // force synchronous transform (we know we only have sync plugins)
        code = result.css;
        outMap = result.map;
    }
    catch (e) {
        errors.push(e);
    }
    return {
        code: code || ``,
        map: outMap && outMap.toJSON(),
        errors,
        rawResult: result,
        dependencies
    };
}
function preprocess$1(options, preprocessor) {
    return preprocessor(options.source, options.inMap || options.map, {
        filename: options.filename,
        ...options.preprocessOptions
    }, options.preprocessCustomRequire);
}

const defaultExportRE = /((?:^|\n|;)\s*)export(\s*)default/;
const namedDefaultExportRE = /((?:^|\n|;)\s*)export(.+)as(\s*)default/;
const exportDefaultClassRE = /((?:^|\n|;)\s*)export\s+default\s+class\s+([\w$]+)/;
/**
 * Utility for rewriting `export default` in a script block into a variable
 * declaration so that we can inject things into it
 */
function rewriteDefault(input, as, parserPlugins) {
    if (!hasDefaultExport(input)) {
        return input + `\nconst ${as} = {}`;
    }
    let replaced;
    const classMatch = input.match(exportDefaultClassRE);
    if (classMatch) {
        replaced =
            input.replace(exportDefaultClassRE, '$1class $2') +
                `\nconst ${as} = ${classMatch[2]}`;
    }
    else {
        replaced = input.replace(defaultExportRE, `$1const ${as} =`);
    }
    if (!hasDefaultExport(replaced)) {
        return replaced;
    }
    // if the script somehow still contains `default export`, it probably has
    // multi-line comments or template strings. fallback to a full parse.
    const s = new MagicString__default(input);
    const ast = parser.parse(input, {
        sourceType: 'module',
        plugins: parserPlugins
    }).program.body;
    ast.forEach(node => {
        if (node.type === 'ExportDefaultDeclaration') {
            s.overwrite(node.start, node.declaration.start, `const ${as} = `);
        }
        if (node.type === 'ExportNamedDeclaration') {
            node.specifiers.forEach(specifier => {
                if (specifier.type === 'ExportSpecifier' &&
                    specifier.exported.type === 'Identifier' &&
                    specifier.exported.name === 'default') {
                    const end = specifier.end;
                    s.overwrite(specifier.start, input.charAt(end) === ',' ? end + 1 : end, ``);
                    s.append(`\nconst ${as} = ${specifier.local.name}`);
                }
            });
        }
    });
    return s.toString();
}
function hasDefaultExport(input) {
    return defaultExportRE.test(input) || namedDefaultExportRE.test(input);
}

const DEFINE_PROPS = 'defineProps';
const DEFINE_EMIT = 'defineEmit';
/**
 * Compile `<script setup>`
 * It requires the whole SFC descriptor because we need to handle and merge
 * normal `<script>` + `<script setup>` if both are present.
 */
function compileScript(sfc, options) {
    const { script, scriptSetup, source, filename } = sfc;
    if (scriptSetup) {
        warnExperimental(`<script setup>`, 227);
    }
    // for backwards compat
    if (!options) {
        options = { id: '' };
    }
    if (!options.id) {
        warnOnce(`compileScript now requires passing the \`id\` option.\n` +
            `Upgrade your vite or vue-loader version for compatibility with ` +
            `the latest experimental proposals.`);
    }
    const scopeId = options.id ? options.id.replace(/^data-v-/, '') : '';
    const cssVars = sfc.cssVars;
    const hasInheritAttrsFlag = sfc.template && sfc.template.attrs['inherit-attrs'] === 'false';
    const scriptLang = script && script.lang;
    const scriptSetupLang = scriptSetup && scriptSetup.lang;
    const isTS = scriptLang === 'ts' || scriptSetupLang === 'ts';
    const plugins = [...shared.babelParserDefaultPlugins, 'jsx'];
    if (options.babelParserPlugins)
        plugins.push(...options.babelParserPlugins);
    if (isTS)
        plugins.push('typescript', 'decorators-legacy');
    if (!scriptSetup) {
        if (!script) {
            throw new Error(`[@vue/compiler-sfc] SFC contains no <script> tags.`);
        }
        if (scriptLang && scriptLang !== 'ts') {
            // do not process non js/ts script blocks
            return script;
        }
        try {
            const scriptAst = parser.parse(script.content, {
                plugins,
                sourceType: 'module'
            }).program.body;
            const bindings = analyzeScriptBindings(scriptAst);
            const needRewrite = cssVars.length || hasInheritAttrsFlag;
            let content = script.content;
            if (needRewrite) {
                content = rewriteDefault(content, `__default__`, plugins);
                if (cssVars.length) {
                    content += genNormalScriptCssVarsCode(cssVars, bindings, scopeId, !!options.isProd);
                }
                if (hasInheritAttrsFlag) {
                    content += `__default__.inheritAttrs = false`;
                }
                content += `\nexport default __default__`;
            }
            return {
                ...script,
                content,
                bindings,
                scriptAst
            };
        }
        catch (e) {
            // silently fallback if parse fails since user may be using custom
            // babel syntax
            return script;
        }
    }
    if (script && scriptLang !== scriptSetupLang) {
        throw new Error(`[@vue/compiler-sfc] <script> and <script setup> must have the same language type.`);
    }
    if (scriptSetupLang && scriptSetupLang !== 'ts') {
        // do not process non js/ts script blocks
        return scriptSetup;
    }
    const defaultTempVar = `__default__`;
    const bindingMetadata = {};
    const helperImports = new Set();
    const userImports = Object.create(null);
    const userImportAlias = Object.create(null);
    const setupBindings = Object.create(null);
    const refBindings = Object.create(null);
    const refIdentifiers = new Set();
    const enableRefSugar = options.refSugar !== false;
    let defaultExport;
    let hasDefinePropsCall = false;
    let hasDefineEmitCall = false;
    let propsRuntimeDecl;
    let propsTypeDecl;
    let propsIdentifier;
    let emitRuntimeDecl;
    let emitTypeDecl;
    let emitIdentifier;
    let hasAwait = false;
    let hasInlinedSsrRenderFn = false;
    // props/emits declared via types
    const typeDeclaredProps = {};
    const typeDeclaredEmits = new Set();
    // record declared types for runtime props type generation
    const declaredTypes = {};
    // magic-string state
    const s = new MagicString__default(source);
    const startOffset = scriptSetup.loc.start.offset;
    const endOffset = scriptSetup.loc.end.offset;
    const scriptStartOffset = script && script.loc.start.offset;
    const scriptEndOffset = script && script.loc.end.offset;
    function helper(key) {
        helperImports.add(key);
        return `_${key}`;
    }
    function parse(input, options, offset) {
        try {
            return parser.parse(input, options).program.body;
        }
        catch (e) {
            e.message = `[@vue/compiler-sfc] ${e.message}\n\n${sfc.filename}\n${shared.generateCodeFrame(source, e.pos + offset, e.pos + offset + 1)}`;
            throw e;
        }
    }
    function error(msg, node, end = node.end + startOffset) {
        throw new Error(`[@vue/compiler-sfc] ${msg}\n\n${sfc.filename}\n${shared.generateCodeFrame(source, node.start + startOffset, end)}`);
    }
    function registerUserImport(source, local, imported, isType) {
        if (source === 'vue' && imported) {
            userImportAlias[imported] = local;
        }
        userImports[local] = {
            isType,
            imported: imported || 'default',
            source
        };
    }
    function processDefineProps(node) {
        if (isCallOf(node, DEFINE_PROPS)) {
            if (hasDefinePropsCall) {
                error(`duplicate ${DEFINE_PROPS}() call`, node);
            }
            hasDefinePropsCall = true;
            propsRuntimeDecl = node.arguments[0];
            // context call has type parameters - infer runtime types from it
            if (node.typeParameters) {
                if (propsRuntimeDecl) {
                    error(`${DEFINE_PROPS}() cannot accept both type and non-type arguments ` +
                        `at the same time. Use one or the other.`, node);
                }
                const typeArg = node.typeParameters.params[0];
                if (typeArg.type === 'TSTypeLiteral') {
                    propsTypeDecl = typeArg;
                }
                else {
                    error(`type argument passed to ${DEFINE_PROPS}() must be a literal type.`, typeArg);
                }
            }
            return true;
        }
        return false;
    }
    function processDefineEmit(node) {
        if (isCallOf(node, DEFINE_EMIT)) {
            if (hasDefineEmitCall) {
                error(`duplicate ${DEFINE_EMIT}() call`, node);
            }
            hasDefineEmitCall = true;
            emitRuntimeDecl = node.arguments[0];
            if (node.typeParameters) {
                if (emitRuntimeDecl) {
                    error(`${DEFINE_EMIT}() cannot accept both type and non-type arguments ` +
                        `at the same time. Use one or the other.`, node);
                }
                const typeArg = node.typeParameters.params[0];
                if (typeArg.type === 'TSFunctionType' ||
                    typeArg.type === 'TSTypeLiteral') {
                    emitTypeDecl = typeArg;
                }
                else {
                    error(`type argument passed to ${DEFINE_EMIT}() must be a function type ` +
                        `or a literal type with call signatures.`, typeArg);
                }
            }
            return true;
        }
        return false;
    }
    function checkInvalidScopeReference(node, method) {
        if (!node)
            return;
        walkIdentifiers(node, id => {
            if (setupBindings[id.name]) {
                error(`\`${method}()\` in <script setup> cannot reference locally ` +
                    `declared variables because it will be hoisted outside of the ` +
                    `setup() function. If your component options requires initialization ` +
                    `in the module scope, use a separate normal <script> to export ` +
                    `the options instead.`, id);
            }
        });
    }
    function processRefExpression(exp, statement) {
        if (exp.type === 'AssignmentExpression') {
            const { left, right } = exp;
            if (left.type === 'Identifier') {
                registerRefBinding(left);
                s.prependRight(right.start + startOffset, `${helper('ref')}(`);
                s.appendLeft(right.end + startOffset, ')');
            }
            else if (left.type === 'ObjectPattern') {
                // remove wrapping parens
                for (let i = left.start; i > 0; i--) {
                    const char = source[i + startOffset];
                    if (char === '(') {
                        s.remove(i + startOffset, i + startOffset + 1);
                        break;
                    }
                }
                for (let i = left.end; i > 0; i++) {
                    const char = source[i + startOffset];
                    if (char === ')') {
                        s.remove(i + startOffset, i + startOffset + 1);
                        break;
                    }
                }
                processRefObjectPattern(left, statement);
            }
            else if (left.type === 'ArrayPattern') {
                processRefArrayPattern(left, statement);
            }
        }
        else if (exp.type === 'SequenceExpression') {
            // possible multiple declarations
            // ref: x = 1, y = 2
            exp.expressions.forEach(e => processRefExpression(e, statement));
        }
        else if (exp.type === 'Identifier') {
            registerRefBinding(exp);
            s.appendLeft(exp.end + startOffset, ` = ${helper('ref')}()`);
        }
        else {
            error(`ref: statements can only contain assignment expressions.`, exp);
        }
    }
    function registerRefBinding(id) {
        if (id.name[0] === '$') {
            error(`ref variable identifiers cannot start with $.`, id);
        }
        refBindings[id.name] = setupBindings[id.name] = "setup-ref" /* SETUP_REF */;
        refIdentifiers.add(id);
    }
    function processRefObjectPattern(pattern, statement) {
        for (const p of pattern.properties) {
            let nameId;
            if (p.type === 'ObjectProperty') {
                if (p.key.start === p.value.start) {
                    // shorthand { foo } --> { foo: __foo }
                    nameId = p.key;
                    s.appendLeft(nameId.end + startOffset, `: __${nameId.name}`);
                    if (p.value.type === 'AssignmentPattern') {
                        // { foo = 1 }
                        refIdentifiers.add(p.value.left);
                    }
                }
                else {
                    if (p.value.type === 'Identifier') {
                        // { foo: bar } --> { foo: __bar }
                        nameId = p.value;
                        s.prependRight(nameId.start + startOffset, `__`);
                    }
                    else if (p.value.type === 'ObjectPattern') {
                        processRefObjectPattern(p.value, statement);
                    }
                    else if (p.value.type === 'ArrayPattern') {
                        processRefArrayPattern(p.value, statement);
                    }
                    else if (p.value.type === 'AssignmentPattern') {
                        // { foo: bar = 1 } --> { foo: __bar = 1 }
                        nameId = p.value.left;
                        s.prependRight(nameId.start + startOffset, `__`);
                    }
                }
            }
            else {
                // rest element { ...foo } --> { ...__foo }
                nameId = p.argument;
                s.prependRight(nameId.start + startOffset, `__`);
            }
            if (nameId) {
                registerRefBinding(nameId);
                // append binding declarations after the parent statement
                s.appendLeft(statement.end + startOffset, `\nconst ${nameId.name} = ${helper('ref')}(__${nameId.name});`);
            }
        }
    }
    function processRefArrayPattern(pattern, statement) {
        for (const e of pattern.elements) {
            if (!e)
                continue;
            let nameId;
            if (e.type === 'Identifier') {
                // [a] --> [__a]
                nameId = e;
            }
            else if (e.type === 'AssignmentPattern') {
                // [a = 1] --> [__a = 1]
                nameId = e.left;
            }
            else if (e.type === 'RestElement') {
                // [...a] --> [...__a]
                nameId = e.argument;
            }
            else if (e.type === 'ObjectPattern') {
                processRefObjectPattern(e, statement);
            }
            else if (e.type === 'ArrayPattern') {
                processRefArrayPattern(e, statement);
            }
            if (nameId) {
                registerRefBinding(nameId);
                // prefix original
                s.prependRight(nameId.start + startOffset, `__`);
                // append binding declarations after the parent statement
                s.appendLeft(statement.end + startOffset, `\nconst ${nameId.name} = ${helper('ref')}(__${nameId.name});`);
            }
        }
    }
    // 1. process normal <script> first if it exists
    let scriptAst;
    if (script) {
        // import dedupe between <script> and <script setup>
        scriptAst = parse(script.content, {
            plugins,
            sourceType: 'module'
        }, scriptStartOffset);
        for (const node of scriptAst) {
            if (node.type === 'ImportDeclaration') {
                // record imports for dedupe
                for (const specifier of node.specifiers) {
                    const imported = specifier.type === 'ImportSpecifier' &&
                        specifier.imported.type === 'Identifier' &&
                        specifier.imported.name;
                    registerUserImport(node.source.value, specifier.local.name, imported, node.importKind === 'type');
                }
            }
            else if (node.type === 'ExportDefaultDeclaration') {
                // export default
                defaultExport = node;
                const start = node.start + scriptStartOffset;
                s.overwrite(start, start + `export default`.length, `const ${defaultTempVar} =`);
            }
            else if (node.type === 'ExportNamedDeclaration' && node.specifiers) {
                const defaultSpecifier = node.specifiers.find(s => s.exported.type === 'Identifier' && s.exported.name === 'default');
                if (defaultSpecifier) {
                    defaultExport = node;
                    // 1. remove specifier
                    if (node.specifiers.length > 1) {
                        s.remove(defaultSpecifier.start + scriptStartOffset, defaultSpecifier.end + scriptStartOffset);
                    }
                    else {
                        s.remove(node.start + scriptStartOffset, node.end + scriptStartOffset);
                    }
                    if (node.source) {
                        // export { x as default } from './x'
                        // rewrite to `import { x as __default__ } from './x'` and
                        // add to top
                        s.prepend(`import { ${defaultSpecifier.local.name} as ${defaultTempVar} } from '${node.source.value}'\n`);
                    }
                    else {
                        // export { x as default }
                        // rewrite to `const __default__ = x` and move to end
                        s.append(`\nconst ${defaultTempVar} = ${defaultSpecifier.local.name}\n`);
                    }
                }
            }
        }
    }
    // 2. parse <script setup> and  walk over top level statements
    const scriptSetupAst = parse(scriptSetup.content, {
        plugins: [
            ...plugins,
            // allow top level await but only inside <script setup>
            'topLevelAwait'
        ],
        sourceType: 'module'
    }, startOffset);
    for (const node of scriptSetupAst) {
        const start = node.start + startOffset;
        let end = node.end + startOffset;
        // import or type declarations: move to top
        // locate comment
        if (node.trailingComments && node.trailingComments.length > 0) {
            const lastCommentNode = node.trailingComments[node.trailingComments.length - 1];
            end = lastCommentNode.end + startOffset;
        }
        // locate the end of whitespace between this statement and the next
        while (end <= source.length) {
            if (!/\s/.test(source.charAt(end))) {
                break;
            }
            end++;
        }
        // process `ref: x` bindings (convert to refs)
        if (node.type === 'LabeledStatement' &&
            node.label.name === 'ref' &&
            node.body.type === 'ExpressionStatement') {
            if (enableRefSugar) {
                warnExperimental(`ref: sugar`, 228);
                s.overwrite(node.label.start + startOffset, node.body.start + startOffset, 'const ');
                processRefExpression(node.body.expression, node);
            }
            else {
                // TODO if we end up shipping ref: sugar as an opt-in feature,
                // need to proxy the option in vite, vue-loader and rollup-plugin-vue.
                error(`ref: sugar needs to be explicitly enabled via vite or vue-loader options.`, node);
            }
        }
        if (node.type === 'ImportDeclaration') {
            // import declarations are moved to top
            s.move(start, end, 0);
            // dedupe imports
            let removed = 0;
            const removeSpecifier = (i) => {
                const removeLeft = i > removed;
                removed++;
                const current = node.specifiers[i];
                const next = node.specifiers[i + 1];
                s.remove(removeLeft
                    ? node.specifiers[i - 1].end + startOffset
                    : current.start + startOffset, next && !removeLeft
                    ? next.start + startOffset
                    : current.end + startOffset);
            };
            for (let i = 0; i < node.specifiers.length; i++) {
                const specifier = node.specifiers[i];
                const local = specifier.local.name;
                const imported = specifier.type === 'ImportSpecifier' &&
                    specifier.imported.type === 'Identifier' &&
                    specifier.imported.name;
                const source = node.source.value;
                const existing = userImports[local];
                if (source === 'vue' &&
                    (imported === DEFINE_PROPS || imported === DEFINE_EMIT)) {
                    removeSpecifier(i);
                }
                else if (existing) {
                    if (existing.source === source && existing.imported === imported) {
                        // already imported in <script setup>, dedupe
                        removeSpecifier(i);
                    }
                    else {
                        error(`different imports aliased to same local name.`, specifier);
                    }
                }
                else {
                    registerUserImport(source, local, imported, node.importKind === 'type');
                }
            }
            if (node.specifiers.length && removed === node.specifiers.length) {
                s.remove(node.start + startOffset, node.end + startOffset);
            }
        }
        // process `defineProps` and `defineEmit` calls
        if (node.type === 'ExpressionStatement' &&
            (processDefineProps(node.expression) ||
                processDefineEmit(node.expression))) {
            s.remove(node.start + startOffset, node.end + startOffset);
        }
        if (node.type === 'VariableDeclaration' && !node.declare) {
            for (const decl of node.declarations) {
                if (decl.init) {
                    const isDefineProps = processDefineProps(decl.init);
                    if (isDefineProps) {
                        propsIdentifier = scriptSetup.content.slice(decl.id.start, decl.id.end);
                    }
                    const isDefineEmit = processDefineEmit(decl.init);
                    if (isDefineEmit) {
                        emitIdentifier = scriptSetup.content.slice(decl.id.start, decl.id.end);
                    }
                    if (isDefineProps || isDefineEmit)
                        if (node.declarations.length === 1) {
                            s.remove(node.start + startOffset, node.end + startOffset);
                        }
                        else {
                            s.remove(decl.start + startOffset, decl.end + startOffset);
                        }
                }
            }
        }
        // walk decalrations to record declared bindings
        if ((node.type === 'VariableDeclaration' ||
            node.type === 'FunctionDeclaration' ||
            node.type === 'ClassDeclaration') &&
            !node.declare) {
            walkDeclaration(node, setupBindings, userImportAlias);
        }
        // Type declarations
        if (node.type === 'VariableDeclaration' && node.declare) {
            s.remove(start, end);
        }
        // move all type declarations to outer scope
        if (node.type.startsWith('TS') ||
            (node.type === 'ExportNamedDeclaration' && node.exportKind === 'type')) {
            recordType(node, declaredTypes);
            s.move(start, end, 0);
        }
        // walk statements & named exports / variable declarations for top level
        // await
        if ((node.type === 'VariableDeclaration' && !node.declare) ||
            node.type.endsWith('Statement')) {
            estreeWalker.walk(node, {
                enter(node) {
                    if (isFunction(node)) {
                        this.skip();
                    }
                    if (node.type === 'AwaitExpression') {
                        hasAwait = true;
                    }
                }
            });
        }
        if ((node.type === 'ExportNamedDeclaration' && node.exportKind !== 'type') ||
            node.type === 'ExportAllDeclaration' ||
            node.type === 'ExportDefaultDeclaration') {
            error(`<script setup> cannot contain ES module exports. ` +
                `If you are using a previous version of <script setup>, please ` +
                `consult the updated RFC at https://github.com/vuejs/rfcs/pull/227.`, node);
        }
    }
    // 3. Do a full walk to rewrite identifiers referencing let exports with ref
    // value access
    if (enableRefSugar && Object.keys(refBindings).length) {
        for (const node of scriptSetupAst) {
            if (node.type !== 'ImportDeclaration') {
                walkIdentifiers(node, (id, parent, parentStack) => {
                    if (refBindings[id.name] && !refIdentifiers.has(id)) {
                        if (isStaticProperty(parent) && parent.shorthand) {
                            // let binding used in a property shorthand
                            // { foo } -> { foo: foo.value }
                            // skip for destructure patterns
                            if (!parent.inPattern ||
                                isInDestructureAssignment(parent, parentStack)) {
                                s.appendLeft(id.end + startOffset, `: ${id.name}.value`);
                            }
                        }
                        else {
                            s.appendLeft(id.end + startOffset, '.value');
                        }
                    }
                    else if (id.name[0] === '$' && refBindings[id.name.slice(1)]) {
                        // $xxx raw ref access variables, remove the $ prefix
                        s.remove(id.start + startOffset, id.start + startOffset + 1);
                    }
                });
            }
        }
    }
    // 4. extract runtime props/emits code from setup context type
    if (propsTypeDecl) {
        extractRuntimeProps(propsTypeDecl, typeDeclaredProps, declaredTypes);
    }
    if (emitTypeDecl) {
        extractRuntimeEmits(emitTypeDecl, typeDeclaredEmits);
    }
    // 5. check useOptions args to make sure it doesn't reference setup scope
    // variables
    checkInvalidScopeReference(propsRuntimeDecl, DEFINE_PROPS);
    checkInvalidScopeReference(emitRuntimeDecl, DEFINE_PROPS);
    // 6. remove non-script content
    if (script) {
        if (startOffset < scriptStartOffset) {
            // <script setup> before <script>
            s.remove(0, startOffset);
            s.remove(endOffset, scriptStartOffset);
            s.remove(scriptEndOffset, source.length);
        }
        else {
            // <script> before <script setup>
            s.remove(0, scriptStartOffset);
            s.remove(scriptEndOffset, startOffset);
            s.remove(endOffset, source.length);
        }
    }
    else {
        // only <script setup>
        s.remove(0, startOffset);
        s.remove(endOffset, source.length);
    }
    // 7. analyze binding metadata
    if (scriptAst) {
        Object.assign(bindingMetadata, analyzeScriptBindings(scriptAst));
    }
    if (propsRuntimeDecl) {
        for (const key of getObjectOrArrayExpressionKeys(propsRuntimeDecl)) {
            bindingMetadata[key] = "props" /* PROPS */;
        }
    }
    for (const key in typeDeclaredProps) {
        bindingMetadata[key] = "props" /* PROPS */;
    }
    for (const [key, { isType, imported, source }] of Object.entries(userImports)) {
        if (isType)
            continue;
        bindingMetadata[key] =
            (imported === 'default' && source.endsWith('.vue')) || source === 'vue'
                ? "setup-const" /* SETUP_CONST */
                : "setup-maybe-ref" /* SETUP_MAYBE_REF */;
    }
    for (const key in setupBindings) {
        bindingMetadata[key] = setupBindings[key];
    }
    // 8. inject `useCssVars` calls
    if (cssVars.length) {
        helperImports.add(CSS_VARS_HELPER);
        helperImports.add('unref');
        s.prependRight(startOffset, `\n${genCssVarsCode(cssVars, bindingMetadata, scopeId, !!options.isProd)}\n`);
    }
    // 9. finalize setup() argument signature
    let args = `__props`;
    if (propsTypeDecl) {
        args += `: ${scriptSetup.content.slice(propsTypeDecl.start, propsTypeDecl.end)}`;
    }
    // inject user assignment of props
    // we use a default __props so that template expressions referencing props
    // can use it directly
    if (propsIdentifier) {
        s.prependRight(startOffset, `\nconst ${propsIdentifier} = __props`);
    }
    if (emitIdentifier) {
        args +=
            emitIdentifier === `emit` ? `, { emit }` : `, { emit: ${emitIdentifier} }`;
        if (emitTypeDecl) {
            args += `: {
        emit: (${scriptSetup.content.slice(emitTypeDecl.start, emitTypeDecl.end)}),
        slots: any,
        attrs: any
      }`;
        }
    }
    // 10. generate return statement
    let returned;
    if (options.inlineTemplate) {
        if (sfc.template && !sfc.template.src) {
            if (options.templateOptions && options.templateOptions.ssr) {
                hasInlinedSsrRenderFn = true;
            }
            // inline render function mode - we are going to compile the template and
            // inline it right here
            const { code, ast, preamble, tips, errors } = compileTemplate({
                filename,
                source: sfc.template.content,
                inMap: sfc.template.map,
                ...options.templateOptions,
                id: scopeId,
                scoped: sfc.styles.some(s => s.scoped),
                isProd: options.isProd,
                ssrCssVars: sfc.cssVars,
                compilerOptions: {
                    ...(options.templateOptions &&
                        options.templateOptions.compilerOptions),
                    inline: true,
                    isTS,
                    bindingMetadata
                }
            });
            if (tips.length) {
                tips.forEach(warnOnce);
            }
            const err = errors[0];
            if (typeof err === 'string') {
                throw new Error(err);
            }
            else if (err) {
                if (err.loc) {
                    err.message +=
                        `\n\n` +
                            sfc.filename +
                            '\n' +
                            shared.generateCodeFrame(source, err.loc.start.offset, err.loc.end.offset) +
                            `\n`;
                }
                throw err;
            }
            if (preamble) {
                s.prepend(preamble);
            }
            // avoid duplicated unref import
            // as this may get injected by the render function preamble OR the
            // css vars codegen
            if (ast && ast.helpers.includes(compilerCore.UNREF)) {
                helperImports.delete('unref');
            }
            returned = code;
        }
        else {
            returned = `() => {}`;
        }
    }
    else {
        // return bindings from setup
        const allBindings = { ...setupBindings };
        for (const key in userImports) {
            if (!userImports[key].isType) {
                allBindings[key] = true;
            }
        }
        returned = `{ ${Object.keys(allBindings).join(', ')} }`;
    }
    s.appendRight(endOffset, `\nreturn ${returned}\n}\n\n`);
    // 11. finalize default export
    // expose: [] makes <script setup> components "closed" by default.
    let runtimeOptions = `\n  expose: [],`;
    if (hasInheritAttrsFlag) {
        runtimeOptions += `\n  inheritAttrs: false,`;
    }
    if (hasInlinedSsrRenderFn) {
        runtimeOptions += `\n  __ssrInlineRender: true,`;
    }
    if (propsRuntimeDecl) {
        runtimeOptions += `\n  props: ${scriptSetup.content
            .slice(propsRuntimeDecl.start, propsRuntimeDecl.end)
            .trim()},`;
    }
    else if (propsTypeDecl) {
        runtimeOptions += genRuntimeProps(typeDeclaredProps);
    }
    if (emitRuntimeDecl) {
        runtimeOptions += `\n  emits: ${scriptSetup.content
            .slice(emitRuntimeDecl.start, emitRuntimeDecl.end)
            .trim()},`;
    }
    else if (emitTypeDecl) {
        runtimeOptions += genRuntimeEmits(typeDeclaredEmits);
    }
    if (isTS) {
        // for TS, make sure the exported type is still valid type with
        // correct props information
        // we have to use object spread for types to be merged properly
        // user's TS setting should compile it down to proper targets
        const def = defaultExport ? `\n  ...${defaultTempVar},` : ``;
        // wrap setup code with function.
        // export the content of <script setup> as a named export, `setup`.
        // this allows `import { setup } from '*.vue'` for testing purposes.
        s.prependLeft(startOffset, `\nexport default ${helper(`defineComponent`)}({${def}${runtimeOptions}\n  ${hasAwait ? `async ` : ``}setup(${args}) {\n`);
        s.appendRight(endOffset, `})`);
    }
    else {
        if (defaultExport) {
            // can't rely on spread operator in non ts mode
            s.prependLeft(startOffset, `\n${hasAwait ? `async ` : ``}function setup(${args}) {\n`);
            s.append(`\nexport default /*#__PURE__*/ Object.assign(${defaultTempVar}, {${runtimeOptions}\n  setup\n})\n`);
        }
        else {
            s.prependLeft(startOffset, `\nexport default {${runtimeOptions}\n  ` +
                `${hasAwait ? `async ` : ``}setup(${args}) {\n`);
            s.appendRight(endOffset, `}`);
        }
    }
    // 12. finalize Vue helper imports
    if (helperImports.size > 0) {
        s.prepend(`import { ${[...helperImports]
            .map(h => `${h} as _${h}`)
            .join(', ')} } from 'vue'\n`);
    }
    s.trim();
    return {
        ...scriptSetup,
        bindings: bindingMetadata,
        content: s.toString(),
        map: s.generateMap({
            source: filename,
            hires: true,
            includeContent: true
        }),
        scriptAst,
        scriptSetupAst
    };
}
function walkDeclaration(node, bindings, userImportAlias) {
    if (node.type === 'VariableDeclaration') {
        const isConst = node.kind === 'const';
        // export const foo = ...
        for (const { id, init } of node.declarations) {
            const isDefineCall = !!(isConst &&
                (isCallOf(init, DEFINE_PROPS) || isCallOf(init, DEFINE_EMIT)));
            if (id.type === 'Identifier') {
                let bindingType;
                const userReactiveBinding = userImportAlias['reactive'] || 'reactive';
                if (isCallOf(init, userReactiveBinding)) {
                    // treat reactive() calls as let since it's meant to be mutable
                    bindingType = "setup-let" /* SETUP_LET */;
                }
                else if (
                // if a declaration is a const literal, we can mark it so that
                // the generated render fn code doesn't need to unref() it
                isDefineCall ||
                    (isConst && canNeverBeRef(init, userReactiveBinding))) {
                    bindingType = "setup-const" /* SETUP_CONST */;
                }
                else if (isConst) {
                    if (isCallOf(init, userImportAlias['ref'] || 'ref')) {
                        bindingType = "setup-ref" /* SETUP_REF */;
                    }
                    else {
                        bindingType = "setup-maybe-ref" /* SETUP_MAYBE_REF */;
                    }
                }
                else {
                    bindingType = "setup-let" /* SETUP_LET */;
                }
                bindings[id.name] = bindingType;
            }
            else if (id.type === 'ObjectPattern') {
                walkObjectPattern(id, bindings, isConst, isDefineCall);
            }
            else if (id.type === 'ArrayPattern') {
                walkArrayPattern(id, bindings, isConst, isDefineCall);
            }
        }
    }
    else if (node.type === 'FunctionDeclaration' ||
        node.type === 'ClassDeclaration') {
        // export function foo() {} / export class Foo {}
        // export declarations must be named.
        bindings[node.id.name] = "setup-const" /* SETUP_CONST */;
    }
}
function walkObjectPattern(node, bindings, isConst, isDefineCall = false) {
    for (const p of node.properties) {
        if (p.type === 'ObjectProperty') {
            // key can only be Identifier in ObjectPattern
            if (p.key.type === 'Identifier') {
                if (p.key === p.value) {
                    // const { x } = ...
                    bindings[p.key.name] = isDefineCall
                        ? "setup-const" /* SETUP_CONST */
                        : isConst
                            ? "setup-maybe-ref" /* SETUP_MAYBE_REF */
                            : "setup-let" /* SETUP_LET */;
                }
                else {
                    walkPattern(p.value, bindings, isConst, isDefineCall);
                }
            }
        }
        else {
            // ...rest
            // argument can only be identifer when destructuring
            bindings[p.argument.name] = isConst
                ? "setup-const" /* SETUP_CONST */
                : "setup-let" /* SETUP_LET */;
        }
    }
}
function walkArrayPattern(node, bindings, isConst, isDefineCall = false) {
    for (const e of node.elements) {
        e && walkPattern(e, bindings, isConst, isDefineCall);
    }
}
function walkPattern(node, bindings, isConst, isDefineCall = false) {
    if (node.type === 'Identifier') {
        bindings[node.name] = isDefineCall
            ? "setup-const" /* SETUP_CONST */
            : isConst
                ? "setup-maybe-ref" /* SETUP_MAYBE_REF */
                : "setup-let" /* SETUP_LET */;
    }
    else if (node.type === 'RestElement') {
        // argument can only be identifer when destructuring
        bindings[node.argument.name] = isConst
            ? "setup-const" /* SETUP_CONST */
            : "setup-let" /* SETUP_LET */;
    }
    else if (node.type === 'ObjectPattern') {
        walkObjectPattern(node, bindings, isConst);
    }
    else if (node.type === 'ArrayPattern') {
        walkArrayPattern(node, bindings, isConst);
    }
    else if (node.type === 'AssignmentPattern') {
        if (node.left.type === 'Identifier') {
            bindings[node.left.name] = isDefineCall
                ? "setup-const" /* SETUP_CONST */
                : isConst
                    ? "setup-maybe-ref" /* SETUP_MAYBE_REF */
                    : "setup-let" /* SETUP_LET */;
        }
        else {
            walkPattern(node.left, bindings, isConst);
        }
    }
}
function recordType(node, declaredTypes) {
    if (node.type === 'TSInterfaceDeclaration') {
        declaredTypes[node.id.name] = [`Object`];
    }
    else if (node.type === 'TSTypeAliasDeclaration') {
        declaredTypes[node.id.name] = inferRuntimeType(node.typeAnnotation, declaredTypes);
    }
    else if (node.type === 'ExportNamedDeclaration' && node.declaration) {
        recordType(node.declaration, declaredTypes);
    }
}
function extractRuntimeProps(node, props, declaredTypes) {
    for (const m of node.members) {
        if (m.type === 'TSPropertySignature' && m.key.type === 'Identifier') {
            props[m.key.name] = {
                key: m.key.name,
                required: !m.optional,
                type: m.typeAnnotation
                    ? inferRuntimeType(m.typeAnnotation.typeAnnotation, declaredTypes)
                    : [`null`]
            };
        }
    }
}
function inferRuntimeType(node, declaredTypes) {
    switch (node.type) {
        case 'TSStringKeyword':
            return ['String'];
        case 'TSNumberKeyword':
            return ['Number'];
        case 'TSBooleanKeyword':
            return ['Boolean'];
        case 'TSObjectKeyword':
            return ['Object'];
        case 'TSTypeLiteral':
            // TODO (nice to have) generate runtime property validation
            return ['Object'];
        case 'TSFunctionType':
            return ['Function'];
        case 'TSArrayType':
        case 'TSTupleType':
            // TODO (nice to have) generate runtime element type/length checks
            return ['Array'];
        case 'TSLiteralType':
            switch (node.literal.type) {
                case 'StringLiteral':
                    return ['String'];
                case 'BooleanLiteral':
                    return ['Boolean'];
                case 'NumericLiteral':
                case 'BigIntLiteral':
                    return ['Number'];
                default:
                    return [`null`];
            }
        case 'TSTypeReference':
            if (node.typeName.type === 'Identifier') {
                if (declaredTypes[node.typeName.name]) {
                    return declaredTypes[node.typeName.name];
                }
                switch (node.typeName.name) {
                    case 'Array':
                    case 'Function':
                    case 'Object':
                    case 'Set':
                    case 'Map':
                    case 'WeakSet':
                    case 'WeakMap':
                        return [node.typeName.name];
                    case 'Record':
                    case 'Partial':
                    case 'Readonly':
                    case 'Pick':
                    case 'Omit':
                    case 'Exclude':
                    case 'Extract':
                    case 'Required':
                    case 'InstanceType':
                        return ['Object'];
                }
            }
            return [`null`];
        case 'TSUnionType':
            return [
                ...new Set([].concat(node.types.map(t => inferRuntimeType(t, declaredTypes))))
            ];
        case 'TSIntersectionType':
            return ['Object'];
        default:
            return [`null`]; // no runtime check
    }
}
function genRuntimeProps(props) {
    const keys = Object.keys(props);
    if (!keys.length) {
        return ``;
    }
    return `\n  props: {\n    ${keys
        .map(key => {
        const { type, required } = props[key];
        return `${key}: { type: ${toRuntimeTypeString(type)}, required: ${required} }`;
    })
        .join(',\n    ')}\n  } as unknown as undefined,`;
}
function toRuntimeTypeString(types) {
    return types.some(t => t === 'null')
        ? `null`
        : types.length > 1
            ? `[${types.join(', ')}]`
            : types[0];
}
function extractRuntimeEmits(node, emits) {
    if (node.type === 'TSTypeLiteral') {
        for (let t of node.members) {
            if (t.type === 'TSCallSignatureDeclaration') {
                extractEventNames(t.parameters[0], emits);
            }
        }
        return;
    }
    else {
        extractEventNames(node.parameters[0], emits);
    }
}
function extractEventNames(eventName, emits) {
    if (eventName.type === 'Identifier' &&
        eventName.typeAnnotation &&
        eventName.typeAnnotation.type === 'TSTypeAnnotation') {
        const typeNode = eventName.typeAnnotation.typeAnnotation;
        if (typeNode.type === 'TSLiteralType') {
            emits.add(String(typeNode.literal.value));
        }
        else if (typeNode.type === 'TSUnionType') {
            for (const t of typeNode.types) {
                if (t.type === 'TSLiteralType') {
                    emits.add(String(t.literal.value));
                }
            }
        }
    }
}
function genRuntimeEmits(emits) {
    return emits.size
        ? `\n  emits: [${Array.from(emits)
            .map(p => JSON.stringify(p))
            .join(', ')}] as unknown as undefined,`
        : ``;
}
function markScopeIdentifier(node, child, knownIds) {
    const { name } = child;
    if (node.scopeIds && node.scopeIds.has(name)) {
        return;
    }
    if (name in knownIds) {
        knownIds[name]++;
    }
    else {
        knownIds[name] = 1;
    }
    (node.scopeIds || (node.scopeIds = new Set())).add(name);
}
/**
 * Walk an AST and find identifiers that are variable references.
 * This is largely the same logic with `transformExpressions` in compiler-core
 * but with some subtle differences as this needs to handle a wider range of
 * possible syntax.
 */
function walkIdentifiers(root, onIdentifier) {
    const parentStack = [];
    const knownIds = Object.create(null);
    estreeWalker.walk(root, {
        enter(node, parent) {
            parent && parentStack.push(parent);
            if (node.type === 'Identifier') {
                if (!knownIds[node.name] &&
                    isRefIdentifier(node, parent, parentStack)) {
                    onIdentifier(node, parent, parentStack);
                }
            }
            else if (isFunction(node)) {
                // #3445
                // should not rewrite local variables sharing a name with a top-level ref
                if (node.body.type === 'BlockStatement') {
                    node.body.body.forEach(p => {
                        if (p.type === 'VariableDeclaration') {
                            for (const decl of p.declarations) {
                                extractIdentifiers(decl.id).forEach(id => {
                                    markScopeIdentifier(node, id, knownIds);
                                });
                            }
                        }
                    });
                }
                // walk function expressions and add its arguments to known identifiers
                // so that we don't prefix them
                node.params.forEach(p => estreeWalker.walk(p, {
                    enter(child, parent) {
                        if (child.type === 'Identifier' &&
                            // do not record as scope variable if is a destructured key
                            !isStaticPropertyKey(child, parent) &&
                            // do not record if this is a default value
                            // assignment of a destructured variable
                            !(parent &&
                                parent.type === 'AssignmentPattern' &&
                                parent.right === child)) {
                            markScopeIdentifier(node, child, knownIds);
                        }
                    }
                }));
            }
            else if (node.type === 'ObjectProperty' &&
                parent.type === 'ObjectPattern') {
                node.inPattern = true;
            }
        },
        leave(node, parent) {
            parent && parentStack.pop();
            if (node.scopeIds) {
                node.scopeIds.forEach((id) => {
                    knownIds[id]--;
                    if (knownIds[id] === 0) {
                        delete knownIds[id];
                    }
                });
            }
        }
    });
}
function isRefIdentifier(id, parent, parentStack) {
    // declaration id
    if ((parent.type === 'VariableDeclarator' ||
        parent.type === 'ClassDeclaration') &&
        parent.id === id) {
        return false;
    }
    if (isFunction(parent)) {
        // function decalration/expression id
        if (parent.id === id) {
            return false;
        }
        // params list
        if (parent.params.includes(id)) {
            return false;
        }
    }
    // property key
    // this also covers object destructure pattern
    if (isStaticPropertyKey(id, parent)) {
        return false;
    }
    // non-assignment array destructure pattern
    if (parent.type === 'ArrayPattern' &&
        !isInDestructureAssignment(parent, parentStack)) {
        return false;
    }
    // member expression property
    if ((parent.type === 'MemberExpression' ||
        parent.type === 'OptionalMemberExpression') &&
        parent.property === id &&
        !parent.computed) {
        return false;
    }
    // is a special keyword but parsed as identifier
    if (id.name === 'arguments') {
        return false;
    }
    return true;
}
const isStaticProperty = (node) => node &&
    (node.type === 'ObjectProperty' || node.type === 'ObjectMethod') &&
    !node.computed;
const isStaticPropertyKey = (node, parent) => isStaticProperty(parent) && parent.key === node;
function isFunction(node) {
    return /Function(?:Expression|Declaration)$|Method$/.test(node.type);
}
function isCallOf(node, name) {
    return !!(node &&
        node.type === 'CallExpression' &&
        node.callee.type === 'Identifier' &&
        node.callee.name === name);
}
function canNeverBeRef(node, userReactiveImport) {
    if (isCallOf(node, userReactiveImport)) {
        return true;
    }
    switch (node.type) {
        case 'UnaryExpression':
        case 'BinaryExpression':
        case 'ArrayExpression':
        case 'ObjectExpression':
        case 'FunctionExpression':
        case 'ArrowFunctionExpression':
        case 'UpdateExpression':
        case 'ClassExpression':
        case 'TaggedTemplateExpression':
            return true;
        case 'SequenceExpression':
            return canNeverBeRef(node.expressions[node.expressions.length - 1], userReactiveImport);
        default:
            if (node.type.endsWith('Literal')) {
                return true;
            }
            return false;
    }
}
function isInDestructureAssignment(parent, parentStack) {
    if (parent &&
        (parent.type === 'ObjectProperty' || parent.type === 'ArrayPattern')) {
        let i = parentStack.length;
        while (i--) {
            const p = parentStack[i];
            if (p.type === 'AssignmentExpression') {
                const root = parentStack[0];
                // if this is a ref: destructure, it should be treated like a
                // variable decalration!
                return !(root.type === 'LabeledStatement' && root.label.name === 'ref');
            }
            else if (p.type !== 'ObjectProperty' && !p.type.endsWith('Pattern')) {
                break;
            }
        }
    }
    return false;
}
/**
 * Analyze bindings in normal `<script>`
 * Note that `compileScriptSetup` already analyzes bindings as part of its
 * compilation process so this should only be used on single `<script>` SFCs.
 */
function analyzeScriptBindings(ast) {
    for (const node of ast) {
        if (node.type === 'ExportDefaultDeclaration' &&
            node.declaration.type === 'ObjectExpression') {
            return analyzeBindingsFromOptions(node.declaration);
        }
    }
    return {};
}
function analyzeBindingsFromOptions(node) {
    const bindings = {};
    // #3270, #3275
    // mark non-script-setup so we don't resolve components/directives from these
    Object.defineProperty(bindings, '__isScriptSetup', {
        enumerable: false,
        value: false
    });
    for (const property of node.properties) {
        if (property.type === 'ObjectProperty' &&
            !property.computed &&
            property.key.type === 'Identifier') {
            // props
            if (property.key.name === 'props') {
                // props: ['foo']
                // props: { foo: ... }
                for (const key of getObjectOrArrayExpressionKeys(property.value)) {
                    bindings[key] = "props" /* PROPS */;
                }
            }
            // inject
            else if (property.key.name === 'inject') {
                // inject: ['foo']
                // inject: { foo: {} }
                for (const key of getObjectOrArrayExpressionKeys(property.value)) {
                    bindings[key] = "options" /* OPTIONS */;
                }
            }
            // computed & methods
            else if (property.value.type === 'ObjectExpression' &&
                (property.key.name === 'computed' || property.key.name === 'methods')) {
                // methods: { foo() {} }
                // computed: { foo() {} }
                for (const key of getObjectExpressionKeys(property.value)) {
                    bindings[key] = "options" /* OPTIONS */;
                }
            }
        }
        // setup & data
        else if (property.type === 'ObjectMethod' &&
            property.key.type === 'Identifier' &&
            (property.key.name === 'setup' || property.key.name === 'data')) {
            for (const bodyItem of property.body.body) {
                // setup() {
                //   return {
                //     foo: null
                //   }
                // }
                if (bodyItem.type === 'ReturnStatement' &&
                    bodyItem.argument &&
                    bodyItem.argument.type === 'ObjectExpression') {
                    for (const key of getObjectExpressionKeys(bodyItem.argument)) {
                        bindings[key] =
                            property.key.name === 'setup'
                                ? "setup-maybe-ref" /* SETUP_MAYBE_REF */
                                : "data" /* DATA */;
                    }
                }
            }
        }
    }
    return bindings;
}
function getObjectExpressionKeys(node) {
    const keys = [];
    for (const prop of node.properties) {
        if ((prop.type === 'ObjectProperty' || prop.type === 'ObjectMethod') &&
            !prop.computed) {
            if (prop.key.type === 'Identifier') {
                keys.push(prop.key.name);
            }
            else if (prop.key.type === 'StringLiteral') {
                keys.push(prop.key.value);
            }
        }
    }
    return keys;
}
function getArrayExpressionKeys(node) {
    const keys = [];
    for (const element of node.elements) {
        if (element && element.type === 'StringLiteral') {
            keys.push(element.value);
        }
    }
    return keys;
}
function getObjectOrArrayExpressionKeys(value) {
    if (value.type === 'ArrayExpression') {
        return getArrayExpressionKeys(value);
    }
    if (value.type === 'ObjectExpression') {
        return getObjectExpressionKeys(value);
    }
    return [];
}
function extractIdentifiers(param, nodes = []) {
    switch (param.type) {
        case 'Identifier':
            nodes.push(param);
            break;
        case 'MemberExpression':
            let object = param;
            while (object.type === 'MemberExpression') {
                object = object.object;
            }
            nodes.push(object);
            break;
        case 'ObjectPattern':
            param.properties.forEach(prop => {
                if (prop.type === 'RestElement') {
                    extractIdentifiers(prop.argument, nodes);
                }
                else {
                    extractIdentifiers(prop.value, nodes);
                }
            });
            break;
        case 'ArrayPattern':
            param.elements.forEach(element => {
                if (element)
                    extractIdentifiers(element, nodes);
            });
            break;
        case 'RestElement':
            extractIdentifiers(param.argument, nodes);
            break;
        case 'AssignmentPattern':
            extractIdentifiers(param.left, nodes);
            break;
    }
    return nodes;
}

exports.generateCodeFrame = compilerCore.generateCodeFrame;
exports.MagicString = MagicString__default;
exports.babelParse = parser.parse;
exports.walk = estreeWalker.walk;
exports.compileScript = compileScript;
exports.compileStyle = compileStyle;
exports.compileStyleAsync = compileStyleAsync;
exports.compileTemplate = compileTemplate;
exports.parse = parse;
exports.rewriteDefault = rewriteDefault;
exports.walkIdentifiers = walkIdentifiers;