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babel-plugin-dev-expression

0.2.0
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  • License BSD-3-Clause

A mirror of Facebook's dev-expression Babel plugin

Package Exports

  • babel-plugin-dev-expression

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (babel-plugin-dev-expression) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

babel-plugin-dev-expression npm version

A mirror of Facebook's dev-expression Babel plugin.

This plugin reduces or eliminates development checks from production code.

__DEV__

Replaces

__DEV__

with

process.env.NODE_ENV !== 'production'

invariant

Replaces

invariant(condition, argument, argument);

with

if (!condition) {
  if ("production" !== process.env.NODE_ENV) {
    invariant(false, argument, argument);
  } else {
    invariant(false);
  }
}

Recommended for use with https://github.com/zertosh/invariant.

warning

Replaces

warning(condition, argument, argument);

with

if ("production" !== process.env.NODE_ENV) {
  warning(condition, argument, argument);
}

Recommended for use with https://github.com/r3dm/warning.