84 lines
2.6 KiB
JavaScript
84 lines
2.6 KiB
JavaScript
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'use strict';
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Object.defineProperty(exports, '__esModule', {
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value: true
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});
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exports.default = handlePotentialSyntaxError;
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exports.enhanceUnexpectedTokenMessage = enhanceUnexpectedTokenMessage;
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function _chalk() {
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const data = _interopRequireDefault(require('chalk'));
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_chalk = function () {
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return data;
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};
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return data;
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}
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function _interopRequireDefault(obj) {
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return obj && obj.__esModule ? obj : {default: obj};
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}
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/**
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* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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const DOT = ' \u2022 ';
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function handlePotentialSyntaxError(e) {
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if (e.codeFrame) {
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e.stack = e.message + '\n' + e.codeFrame;
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}
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if (
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// `instanceof` might come from the wrong context
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e.name === 'SyntaxError' &&
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!e.message.includes(' expected')
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) {
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throw enhanceUnexpectedTokenMessage(e);
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}
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return e;
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}
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function enhanceUnexpectedTokenMessage(e) {
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e.stack =
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`${_chalk().default.bold.red('Jest encountered an unexpected token')}
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Jest failed to parse a file. This happens e.g. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax.
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Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration.
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By default "node_modules" folder is ignored by transformers.
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Here's what you can do:
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${DOT}If you are trying to use ECMAScript Modules, see ${_chalk().default.underline(
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'https://jestjs.io/docs/ecmascript-modules'
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)} for how to enable it.
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${DOT}If you are trying to use TypeScript, see ${_chalk().default.underline(
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'https://jestjs.io/docs/getting-started#using-typescript'
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)}
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${DOT}To have some of your "node_modules" files transformed, you can specify a custom ${_chalk().default.bold(
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'"transformIgnorePatterns"'
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)} in your config.
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${DOT}If you need a custom transformation specify a ${_chalk().default.bold(
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'"transform"'
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)} option in your config.
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${DOT}If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the ${_chalk().default.bold(
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'"moduleNameMapper"'
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)} config option.
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You'll find more details and examples of these config options in the docs:
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${_chalk().default.cyan('https://jestjs.io/docs/configuration')}
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For information about custom transformations, see:
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${_chalk().default.cyan('https://jestjs.io/docs/code-transformation')}
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${_chalk().default.bold.red('Details:')}
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` + e.stack;
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return e;
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}
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