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jest-editor-support

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The engine that allows editors to build on top of Jest.

Usage

This is only useful if you are interested in building an editor integration for Jest.

API

parse(   
  filePath: string,   
  serializedData?: string,   
  options?: JESParserOptions
);

JESParserOptions = 
{
    plugins?: JESParserPluginOptions;
    strictMode?: boolean;
};

JESParserPluginOptions = 
{
  decorators?: 'legacy' | {
    decoratorsBeforeExport?: boolean;
    allowCallParenthesized?: boolean;
  }
}

Parse is a static Jest parser which uses Babel 7 and supports js,jsx,mjs,ts,tsx files.

Supported ECMAScript proposals

  • filePath = Path to the file you want to parse.
  • serializedData = Serialized data, will be used instead of the filePath if available (optional).
  • options:
    • strictMode = If this option is activated the parser throws an exception if the filetype is not detected, defaults to false.
    • pluginOptions = allow override for selected plugins options. Currently only support decorators.

examples:

parse('test.spec.ts');
parse('parameterDecorators.spec.ts', undefined, {plugins: {decorators: 'legacy'}})
parse('parameterDecorators.spec.ts', undefined, 
  {plugins: 
    {decorators: 
      {decoratorsBeforeExport: false}
    }
  })

Note

Since version 18.2.0 TypeScript is now a peer dependency. If you don't need to handle .tsx files then you can safely ignore the warning during installation.