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/
utils.js
122 lines (101 loc) · 2.9 KB
/
utils.js
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import { stringifyRequest } from 'loader-utils';
function getDefaultFilename(filename) {
if (typeof filename === 'function') {
return filename;
}
return filename.replace(/\.([a-z]+)(\?.+)?$/i, '.worker.$1$2');
}
function getDefaultChunkFilename(chunkFilename) {
return chunkFilename.replace(/\.([a-z]+)(\?.+)?$/i, '.worker.$1$2');
}
function getExternalsType(compilerOptions) {
// For webpack@4
if (compilerOptions.output.libraryTarget) {
return compilerOptions.output.libraryTarget;
}
// For webpack@5
if (compilerOptions.externalsType) {
return compilerOptions.externalsType;
}
if (compilerOptions.output.library) {
return compilerOptions.output.library.type;
}
if (compilerOptions.output.module) {
return 'module';
}
return 'var';
}
function workerGenerator(loaderContext, workerFilename, workerSource, options) {
let workerConstructor;
let workerOptions;
if (typeof options.worker === 'undefined') {
workerConstructor = 'Worker';
} else if (typeof options.worker === 'string') {
workerConstructor = options.worker;
} else {
({ type: workerConstructor, options: workerOptions } = options.worker);
}
const esModule =
typeof options.esModule !== 'undefined' ? options.esModule : true;
if (options.inline) {
const InlineWorkerPath = stringifyRequest(
loaderContext,
`!!${require.resolve('./runtime/inline.js')}`
);
let fallbackWorkerPath;
if (options.inline === 'fallback') {
fallbackWorkerPath = `__webpack_public_path__ + ${JSON.stringify(
workerFilename
)}`;
}
return `
${
esModule
? `import worker from ${InlineWorkerPath};`
: `var worker = require(${InlineWorkerPath});`
}
${
esModule ? 'export default' : 'module.exports ='
} function() {\n return worker(${JSON.stringify(
workerSource
)}, ${JSON.stringify(workerConstructor)}, ${JSON.stringify(
workerOptions
)}, ${fallbackWorkerPath});\n}\n`;
}
return `${
esModule ? 'export default' : 'module.exports ='
} function() {\n return new ${workerConstructor}(__webpack_public_path__ + ${JSON.stringify(
workerFilename
)}${workerOptions ? `, ${JSON.stringify(workerOptions)}` : ''});\n}\n`;
}
// Matches only the last occurrence of sourceMappingURL
const innerRegex = /\s*[#@]\s*sourceMappingURL\s*=\s*(.*?(?=[\s'"]|\\n|\*\/|$)(?:\\n)?)\s*/;
/* eslint-disable prefer-template */
const sourceMappingURLRegex = RegExp(
'(?:' +
'/\\*' +
'(?:\\s*\r?\n(?://)?)?' +
'(?:' +
innerRegex.source +
')' +
'\\s*' +
'\\*/' +
'|' +
'//(?:' +
innerRegex.source +
')' +
')' +
'\\s*'
);
const sourceURLWebpackRegex = RegExp(
'\\/\\/#\\ssourceURL=webpack-internal:\\/\\/\\/(.*?)\\\\n'
);
/* eslint-enable prefer-template */
export {
getDefaultFilename,
getDefaultChunkFilename,
getExternalsType,
workerGenerator,
sourceMappingURLRegex,
sourceURLWebpackRegex,
};