| 1 | "use strict";
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| 2 | var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
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| 3 | if (k2 === undefined) k2 = k;
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| 4 | Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
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| 5 | }) : (function(o, m, k, k2) {
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| 6 | if (k2 === undefined) k2 = k;
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| 7 | o[k2] = m[k];
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| 8 | }));
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| 9 | var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
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| 10 | Object.defineProperty(o, "default", { enumerable: true, value: v });
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| 11 | }) : function(o, v) {
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| 12 | o["default"] = v;
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| 13 | });
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| 14 | var __importStar = (this && this.__importStar) || function (mod) {
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| 15 | if (mod && mod.__esModule) return mod;
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| 16 | var result = {};
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| 17 | if (mod != null) for (var k in mod) if (k !== "default" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
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| 18 | __setModuleDefault(result, mod);
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| 19 | return result;
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| 20 | };
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| 21 | var __importDefault = (this && this.__importDefault) || function (mod) {
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| 22 | return (mod && mod.__esModule) ? mod : { "default": mod };
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| 23 | };
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| 24 | Object.defineProperty(exports, "__esModule", { value: true });
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| 25 | const convert = __importStar(require("convert-source-map"));
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| 26 | const istanbul_lib_instrument_1 = require("istanbul-lib-instrument");
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| 27 | const loaderUtils = __importStar(require("loader-utils"));
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| 28 | const merge_source_map_1 = __importDefault(require("merge-source-map"));
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| 29 | const path = __importStar(require("path"));
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| 30 | const schema_utils_1 = __importDefault(require("schema-utils"));
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| 31 | const optionsSchema = __importStar(require("./options-schema.json"));
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| 32 | const options_js_1 = require("./options.js");
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| 33 | /**
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| 34 | * Adds code coverage instrumentation using Istanbul.
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| 35 | *
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| 36 | * If the source code has an existing source map, then it is used to re-map the instrumented
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| 37 | * code back to the original source.
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| 38 | */
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| 39 | function default_1(source, sourceMap) {
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| 40 | let options = loaderUtils.getOptions(this);
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| 41 | options = Object.assign(options_js_1.defaultOptions, options);
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| 42 | schema_utils_1.default(optionsSchema, options, "Coverage Istanbul Loader");
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| 43 | // If there's no external sourceMap file, then check for an inline sourceMap
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| 44 | if (!sourceMap) {
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| 45 | sourceMap = getInlineSourceMap.call(this, source);
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| 46 | }
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| 47 | // Instrument the code
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| 48 | let instrumenter = istanbul_lib_instrument_1.createInstrumenter(options);
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| 49 | instrumenter.instrument(source, this.resourcePath, done.bind(this), sourceMap);
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| 50 | function done(error, instrumentedSource) {
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| 51 | // Get the source map for the instrumented code
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| 52 | let instrumentedSourceMap = instrumenter.lastSourceMap();
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| 53 | if (sourceMap && instrumentedSourceMap) {
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| 54 | // Re-map the source map to the original source code
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| 55 | instrumentedSourceMap = merge_source_map_1.default(sourceMap, instrumentedSourceMap);
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| 56 | }
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| 57 | this.callback(error, instrumentedSource, instrumentedSourceMap);
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| 58 | }
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| 59 | }
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| 60 | exports.default = default_1;
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| 61 | /**
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| 62 | * If the source code has an inline base64-encoded source map,
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| 63 | * then this function decodes it, parses it, and returns it.
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| 64 | */
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| 65 | function getInlineSourceMap(source) {
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| 66 | try {
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| 67 | // Check for an inline source map
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| 68 | const inlineSourceMap = convert.fromSource(source)
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| 69 | || convert.fromMapFileSource(source, path.dirname(this.resourcePath));
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| 70 | if (inlineSourceMap) {
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| 71 | // Use the inline source map
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| 72 | return inlineSourceMap.sourcemap;
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| 73 | }
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| 74 | }
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| 75 | catch (e) {
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| 76 | // Exception is thrown by fromMapFileSource when there is no source map file
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| 77 | if (e instanceof Error && e.message.includes("An error occurred while trying to read the map file at")) {
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| 78 | this.emitWarning(e);
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| 79 | }
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| 80 | else {
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| 81 | throw e;
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| 82 | }
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| 83 | }
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| 84 | }
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| 85 | //# sourceMappingURL=index.js.map |
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