@cypress/webpack-preprocessor
Version:
Cypress preprocessor for bundling JavaScript via webpack
74 lines (73 loc) • 3.71 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.overrideSourceMaps = void 0;
var debug_1 = __importDefault(require("debug"));
var lodash_1 = __importDefault(require("lodash"));
var lt_1 = __importDefault(require("semver/functions/lt"));
var debug = (0, debug_1.default)('cypress:webpack');
var patched = false;
var getProgramOptions = function (rootNamesOrOptions, options) {
return lodash_1.default.isArray(rootNamesOrOptions) ? options : rootNamesOrOptions.options;
};
var overrideSourceMaps = function (sourceMap, typescriptPath) {
// when using webpack-preprocessor as a local filesystem dependency (`file:...`),
// require(typescript) will resolve to this repo's `typescript` devDependency, not the
// targeted project's `typescript`, which breaks monkeypatching. resolving from the
// CWD avoids this issue.
try {
var projectTsPath = require.resolve(typescriptPath || 'typescript', {
paths: [process.cwd()],
});
var typescript_1 = require(projectTsPath);
var createProgram_1 = typescript_1.createProgram;
// NOTE: typescript.createProgram can only be monkey-patched in TypeScript versions 4 and under.
// This is due to TypeScript v5 being an ESM package build with ESBuild, meaning the exports are
// unmodifiable.
// For TypeScript 5, we are currently setting sourceMaps in @cypress/webpack-batteries-included-preprocessor.
// If you are using @cypress/webpack-preprocessor as a standalone package, you will need to set sourceMaps=true
// inside your cypress/tsconfig.json file in order to get full codeFrame support.
if ((0, lt_1.default)(typescript_1.version, '5.0.0')) {
try {
if (patched) {
debug('typescript.createProgram() already overridden');
return;
}
debug('typescript %s found, overriding typescript.createProgram()', typescript_1.version);
typescript_1.createProgram = function () {
var args = [];
for (var _i = 0; _i < arguments.length; _i++) {
args[_i] = arguments[_i];
}
var rootNamesOrOptions = args[0], _options = args[1];
var options = getProgramOptions(rootNamesOrOptions, _options);
debug('typescript unmodified createProgram options %o', options);
// if sourceMap has been set then apply
// these overrides to force typescript
// to generate the right sourcemaps
options.sourceMap = sourceMap;
delete options.inlineSources;
delete options.inlineSourceMap;
debug('typescript modified createProgram options %o', options);
return createProgram_1.apply(typescript_1, args);
};
patched = true;
}
catch (err) {
debug('error overriding `typescript.createProgram()', err);
// for testing purposes
return err;
}
}
else {
debug("typescript version ".concat(typescript_1.version, " is not supported for monkey-patching"));
}
}
catch (err) {
debug("error sourcing typescript from ".concat(typescriptPath || 'typescript'), err);
return err;
}
};
exports.overrideSourceMaps = overrideSourceMaps;