@storybook/addon-coverage/dist/loader/webpack5-istanbul-loader.js

Tools to support code coverage in Storybook

var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
  // If the importer is in node compatibility mode or this is not an ESM
  // file that has been converted to a CommonJS file using a Babel-
  // compatible transform (i.e. "__esModule" has not been set), then set
  // "default" to the CommonJS "module.exports" for node compatibility.
  isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
  mod
));
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);

// src/loader/webpack5-istanbul-loader.ts
var webpack5_istanbul_loader_exports = {};
__export(webpack5_istanbul_loader_exports, {
  default: () => webpack5_istanbul_loader_default
});
module.exports = __toCommonJS(webpack5_istanbul_loader_exports);
var import_convert_source_map = require("convert-source-map");
var import_fs = __toESM(require("fs"));
var import_path = __toESM(require("path"));
function sanitizeSourceMap(rawSourceMap) {
  return typeof rawSourceMap === "string" ? JSON.parse(rawSourceMap) : rawSourceMap;
}
function webpack5_istanbul_loader_default(source, sourceMap) {
  let map = sourceMap ? sanitizeSourceMap(sourceMap) : getInlineSourceMap.call(this, source);
  const options = this.getOptions();
  const callback = this.async();
  if (!map) {
    callback(null, source, sourceMap);
    return;
  }
  const instrumenter = options.instrumenter;
  const code = instrumenter.instrumentSync(source, this.resourcePath, map);
  const lastSourceMap = instrumenter.lastSourceMap();
  callback(null, code, lastSourceMap);
}
function getInlineSourceMap(source) {
  try {
    const inlineSourceMap = (0, import_convert_source_map.fromSource)(source) || (0, import_convert_source_map.fromMapFileSource)(source, function(filename) {
      return import_fs.default.readFileSync(
        import_path.default.resolve(import_path.default.dirname(this.resourcePath), filename),
        "utf-8"
      );
    });
    if (inlineSourceMap) {
      return inlineSourceMap.sourcemap;
    }
  } catch (e) {
    if (e instanceof Error && e.message.includes(
      "An error occurred while trying to read the map file at"
    )) {
      this.emitWarning(e);
    } else {
      throw e;
    }
  }
}