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Add metro to paths to be babel-transformed 

Reviewed By: fkgozali

Differential Revision: D7620341

fbshipit-source-id: fc801c938628f5b6b118b8250d5c63268e19359e
This commit is contained in:
Peter van der Zee 2018-04-13 14:10:43 -07:00 committed by Facebook Github Bot
parent 7500b3ec83
commit af661e4a6f
1 changed files with 19 additions and 15 deletions
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34
setupBabel.js
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@ -11,7 +11,7 @@ const babelRegisterOnly = require('metro/src/babelRegisterOnly');
const escapeRegExp = require('lodash/escapeRegExp');
const path = require('path');
const BABEL_ENABLED_PATHS = ['local-cli'];
const BABEL_ENABLED_PATHS = ['local-cli', 'metro'];
/**
* We use absolute paths for matching only the top-level folders reliably. For
@ -21,20 +21,24 @@ const BABEL_ENABLED_PATHS = ['local-cli'];
function buildRegExps(basePath, dirPaths) {
return dirPaths.map(
folderPath =>
// Babel `only` option works with forward slashes in the RegExp so replace
// backslashes for Windows.
folderPath instanceof RegExp
? new RegExp(
`^${escapeRegExp(
path.resolve(basePath, '.').replace(/\\/g, '/')
)}/${folderPath.source}`,
folderPath.flags
)
: new RegExp(
`^${escapeRegExp(
path.resolve(basePath, folderPath).replace(/\\/g, '/')
)}`
)
folderPath === 'metro'
// metro uses flow (for example) which needs to be stripped out w/babel.
// it'll resolve to .../metro/packages/metro/src/index.js we want root
? path.resolve(require.resolve('metro'), '..', '..', '..', '..')
// Babel `only` option works with forward slashes in the RegExp so replace
// backslashes for Windows.
: folderPath instanceof RegExp
? new RegExp(
`^${escapeRegExp(
path.resolve(basePath, '.').replace(/\\/g, '/')
)}/${folderPath.source}`,
folderPath.flags
)
: new RegExp(
`^${escapeRegExp(
path.resolve(basePath, folderPath).replace(/\\/g, '/')
)}`
)
);
}