Package Exports
- babel-plugin-transform-define
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-transform-define) 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-transform-define
Compile time code replacement for babel similar to Webpack's DefinePlugin
Quick Start
npm install babel-plugin-transform-define.babelrc
{
"plugins": [
["transform-define", {
"process.env.NODE_ENV": "production",
"typeof window": "object"
}]
]
}.babelrc
{
"plugins": [
["transform-define", "./path/to/config/file.js"]
]
}Note: Paths are relative to `process.cwd()``
Reference Documentation
babel-plugin-transform-define can transform certain types of code as a babel transformation.
#####Identifiers
.babelrc
{
"plugins": [
["transform-define", {
"VERSION": "1.0.0",
}]
]
}Source Code
VERSION;
window.__MY_COMPANY__ = {
version: VERSION
};Output Code
"1.0.0";
window.__MY_COMPANY__ = {
version: "1.0.0"
};#####Member Expressions
.babelrc
{
"plugins": [
["transform-define", {
"process.env.NODE_ENV": "production"
}]
]
}Source Code
if (process.env.NODE_ENV === "production") {
console.log(true);
}Output Code
if (true) {
console.log(true);
}#####Unary Expressions
.babelrc
{
"plugins": [
["transform-define", {
"typeof window": "object"
}]
]
}Source Code
typeof window;
typeof window === "object";Output Code
'object';
true;