0.2.0 • Published 2 years ago
esbuild-ifdef v0.2.0
esbuild-ifdef
This esbuild plugin allows you to include/exclude code from your bundle conditionally on compile time using /// #if
comments.
Installation
# npm
npm install esbuild-ifdef
#yarn
yarn add esbuild-ifdef
Usage
Example:
/// #if NODE_ENV === "production"
console.log('production specific code');
/// #elif NODE_ENV === "debug"
console.log('debug specific code');
/// #else
/// #warning Unknown NODE_ENV
console.log('something else');
/// #endif
All directives accept any valid javascript expressions. If blocks can be nested.
Available comments
/// #if expression
/// #elseif expression
,/// #elif expression
/// #else
/// #endif
/// #warning text
,/// #warn text
- shows up a warning at compile time/// #error text
,/// #err text
- throws an error at compile time
Using plugin
esbuild.build({
entryPoints: ['./index.js'],
bundle: true,
target: 'es6',
outfile: './out.js',
plugins: [
ifdefPlugin({
variables: {
VARIABLE_NAME: 'variable value'
},
// ... plugin config
})
]
});
Configuration
Name | Type | Default | Description |
---|---|---|---|
verbose | boolean | false | Enabled logging of the included strings and expression results |
fillWithSpaces | boolean | false | Fill removed lines with spaces instead of commenting out |
requireTripleSlash | boolean | true | Require usage of /// before directives |
filePath | RegExp | /\.[jt]sx?/ | File matching RegExp. |
regExp | RegExp | - | Custom parsing RegExp. Overrides requireTripleSlash option. RegExp should have one group named token and one group named expression . Default RegExp for parsing triple slash directives is /\/\/\/[\s]*#(?<token>.*?)(?:[\s]+(?<expression>.*?))?[\s]*$/ |
variables | Record<string, any> | process.env | Variables for the expressions |
License
MIT