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karma-typescript-es6-transform
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Readme
Karma-Typescript :heart: ES2015
This plugin uses the Babel compiler to transform ES2015 (aka ES6) code to ES5 syntax, making the code browser compatible when running tests with karma-typescript.
$ npm install --save-dev karma-typescript-es6-transform
In the karma-typescript
section of karma.conf.js
:
karmaTypescriptConfig: {
bundlerOptions: {
transforms: [
require("karma-typescript-es6-transform")()
]
}
}
By default, the options presets: [["@babel/preset-env"]]
and filename: TransformContext.filename
are passed to the Babel compiler.
Custom options can be passed to the compiler in the first argument when calling the plugin:
karmaTypescriptConfig: {
bundlerOptions: {
transforms: [
require("karma-typescript-es6-transform")({
presets: [
["@babel/preset-env", {
targets: {
chrome: "60"
}
}]
]
})
]
}
}
Passing custom presets
or filename
options will override the default settings.
The javascript code passed to the plugin is statically analyzed by recursively traversing
the AST, looking for these ES2015 keywords: class
, const
, export
, import
, let
.
If any keyword or a fat arrow function is found the code will be transformed to ES5 syntax.
This software is licensed with the MIT license.
© 2016-2021 Erik Barke, Monounity
FAQs
Plugin for transforming ES2015 javascript code to to ES5 syntax.
The npm package karma-typescript-es6-transform receives a total of 12,727 weekly downloads. As such, karma-typescript-es6-transform popularity was classified as popular.
We found that karma-typescript-es6-transform demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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