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| author | ruki <waruqi@gmail.com> | 2018-11-08 00:43:05 +0800 |
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| committer | ruki <waruqi@gmail.com> | 2018-11-07 22:18:30 +0800 |
| commit | 89e95b3f143682ed9a006991bacf45c9dcba4818 (patch) | |
| tree | 4f44cf41b828577d583890bdd5a1c31e8491a6ba /node_modules/@babel/helpers/README.md | |
| parent | aa7f0199255277949790b41c56e8ec97dd4f0da4 (diff) | |
| download | xmake-docs-vuepress.tar.gz xmake-docs-vuepress.zip | |
remove node_modulesvuepress
Diffstat (limited to 'node_modules/@babel/helpers/README.md')
| -rw-r--r-- | node_modules/@babel/helpers/README.md | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/node_modules/@babel/helpers/README.md b/node_modules/@babel/helpers/README.md deleted file mode 100644 index ce5288bf..00000000 --- a/node_modules/@babel/helpers/README.md +++ /dev/null @@ -1,56 +0,0 @@ -# @babel/helpers - -> Collection of helper functions used by Babel transforms. - -## Install - -```sh -npm install --save-dev @babel/helpers -``` - -## Usage - -Direct: - -```js -import * as helpers from '@babel/helpers'; -import * as t from '@babel/types'; - -const typeofHelper = helpers.get('typeof'); - -t.isExpressionStatement(typeofHelper); -// true -``` - -Inside a plugin: - -```js -export default { - visitor: { - UnaryExpression(path) { - // The .addHelper function adds, if needed, the helper to the file - // and returns an expression which references the helper - const typeofHelper = this.addHelper("typeof"); - t.isExpression(typeofHelper); // true - } -}; -``` - -## Defining Helpers - -> **NOTE**: This package is only meant to be used by the packages inluded in this repository. There is currently no way for third-party plugins to define an helper. - -Helpers are defined in the `src/helpers.js` file, and they must be valid modules which follow these guidelines: - - They must have a default export, which is their entry-point. - - They can import other helpers, exclusively by using default imports. - - They can't have named exports. - -```js -helpers.customHelper = defineHelper(` - import dep from "dependency"; - const foo = 2; - export default function getFooTimesDepPlusX(x) { - return foo * dep() + x; - } -`); -``` |
