Babel unexpected token import when running mocha tests

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For Babel <6

The easiest way to solve this problem is:

  1. npm install babel-preset-es2015 --save-dev

  2. Add .babelrc to the root of the project with contents:

    {
 "presets": [ "es2015" ]
}

Ensure that you are running mocha with the “–compilers js:babel-core/register” parameter.

For Babel6/7+

  1. npm install @babel/preset-env --save-dev

  2. Add .babelrc to the root of the project with contents:

    {
 "presets": [ "@babel/preset-env" ]
}

Ensure that you are running mocha with the --compilers js:babel-register (Babel 6) or --compilers js:@babel/register (Babel 7) parameter

For mocha version 7 or later, use --require babel-register or --require @babel/register respectively.

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