Jest Test Error: Syntax Error: Unexpected Token <

Question

Not sure where to look for this error.

Using Typescript with reaction, as well as Jest and Enzyme for unit testing.

Sample Package.json:

"scripts": {
    "start": "node server.js",
    "bundle": "cross-env NODE_ENV=production webpack -p",
    "test": "jest"
  },
  "jest": {
    "transform": {
      "^.+\\.tsx?$": "<rootDir>/node_modules/ts-jest/preprocessor.js"
    },
    "testRegex": "(/__tests__/.*|\\.(test|spec))\\.(ts|tsx|js)$",
    "moduleFileExtensions": [
      "ts",
      "tsx",
      "js",
      "json"
    ]
  }

Npm run results in:

FAIL src/components/Component.test.tsx

 ({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){<?xml version="1.0" encoding="UTF-8"?>
                                                                                             ^

    SyntaxError: Unexpected token <

Edit: this seems to be the first place I use requireto upload a static file .svg. Why can't he handle it? Is there a way to ignore this error when using require?

Answer 1

Jest Webpack, , , js/jsx. , . Typescript, :

"transform": {
   "^.+\\.tsx?$": "<rootDir>/node_modules/ts-jest/preprocessor.js"
},

SVG .

"transform": {
       "^.+\\.tsx?$": "<rootDir>/node_modules/ts-jest/preprocessor.js",
       "^.+\\.svg$": "<rootDir>/svgTransform.js" 
    },

svgTransform.js

module.exports = {
  process() {
    return 'module.exports = {};';
  },
  getCacheKey() {
    // The output is always the same.
    return 'svgTransform';
  },
};

, , .

: http://facebook.imtqy.com/jest/docs/en/configuration.html#transform-object-string-string