Bug: If in your build script, you have --copy-files passed, files that are ignored in .babelrc files will be copied over, instead of being ignored.

Input Code

babel src --out-dir lib --copy-files

Babel Configuration (.babelrc, package.json, cli command)

{
  "presets": [
    "es2015",
    "stage-1",
    "react"
  ],
  "ignore": [
    "**__mocks__/*.js"
  ]
}

Expected Behavior

Babel should not copy files that are explicitly ignored in .babelrc configuration. In this case, babel should not transpile or copy Jest mocks.

Current Behavior

Babel copies files that are ignored are explicitly .babelrc.

> npm run build 
> babel src --out-dir lib --copy-files
  src/api/__mocks__/index.js -> lib/api/__mocks__/index.js
  src/api/endpoints.js -> lib/api/endpoints.js

If you pass an --ignore flag (with the same blob) after the --copy-files flag, it will behave as expected.

> npm run build;
> babel src --out-dir lib --copy-files --ignore **__mocks__/*.js
  src/api/endpoints.js -> lib/api/endpoints.js
  (output does not include ignored directories)

Context

This issue comes up when you work with Jest manual mocks inside of your source directory. Jest warns that you have duplicate mocks directories.