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85 lines
3.6 KiB
85 lines
3.6 KiB
"use strict";
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var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
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if (k2 === undefined) k2 = k;
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Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
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}) : (function(o, m, k, k2) {
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if (k2 === undefined) k2 = k;
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o[k2] = m[k];
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}));
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var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
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Object.defineProperty(o, "default", { enumerable: true, value: v });
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}) : function(o, v) {
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o["default"] = v;
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});
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var __importStar = (this && this.__importStar) || function (mod) {
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if (mod && mod.__esModule) return mod;
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var result = {};
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if (mod != null) for (var k in mod) if (k !== "default" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
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__setModuleDefault(result, mod);
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return result;
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};
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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const convert = __importStar(require("convert-source-map"));
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const istanbul_lib_instrument_1 = require("istanbul-lib-instrument");
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const loaderUtils = __importStar(require("loader-utils"));
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const merge_source_map_1 = __importDefault(require("merge-source-map"));
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const path = __importStar(require("path"));
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const schema_utils_1 = __importDefault(require("schema-utils"));
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const optionsSchema = __importStar(require("./options-schema.json"));
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const options_js_1 = require("./options.js");
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/**
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* Adds code coverage instrumentation using Istanbul.
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*
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* If the source code has an existing source map, then it is used to re-map the instrumented
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* code back to the original source.
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*/
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function default_1(source, sourceMap) {
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let options = loaderUtils.getOptions(this);
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options = Object.assign(options_js_1.defaultOptions, options);
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schema_utils_1.default(optionsSchema, options, "Coverage Istanbul Loader");
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// If there's no external sourceMap file, then check for an inline sourceMap
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if (!sourceMap) {
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sourceMap = getInlineSourceMap.call(this, source);
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}
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// Instrument the code
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let instrumenter = istanbul_lib_instrument_1.createInstrumenter(options);
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instrumenter.instrument(source, this.resourcePath, done.bind(this), sourceMap);
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function done(error, instrumentedSource) {
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// Get the source map for the instrumented code
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let instrumentedSourceMap = instrumenter.lastSourceMap();
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if (sourceMap && instrumentedSourceMap) {
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// Re-map the source map to the original source code
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instrumentedSourceMap = merge_source_map_1.default(sourceMap, instrumentedSourceMap);
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}
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this.callback(error, instrumentedSource, instrumentedSourceMap);
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}
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}
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exports.default = default_1;
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/**
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* If the source code has an inline base64-encoded source map,
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* then this function decodes it, parses it, and returns it.
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*/
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function getInlineSourceMap(source) {
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try {
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// Check for an inline source map
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const inlineSourceMap = convert.fromSource(source)
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|| convert.fromMapFileSource(source, path.dirname(this.resourcePath));
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if (inlineSourceMap) {
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// Use the inline source map
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return inlineSourceMap.sourcemap;
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}
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}
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catch (e) {
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// Exception is thrown by fromMapFileSource when there is no source map file
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if (e instanceof Error && e.message.includes("An error occurred while trying to read the map file at")) {
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this.emitWarning(e);
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}
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else {
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throw e;
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}
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}
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}
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//# sourceMappingURL=index.js.map
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