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flow-remove-types-2.204.0
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مشاهده بیشترتوضیحات
Removes Flow type annotations from JavaScript files with speed and simplicity.
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | flow-remove-types-2.204.0 |
| نام | flow-remove-types |
| نسخه کتابخانه | 2.204.0 |
| نگهدارنده | ['leebyron', 'flowtype'] |
| ایمیل نگهدارنده | ['lee@leebyron.com', 'flow@fb.com'] |
| نویسنده | Flow Team |
| ایمیل نویسنده | flow@fb.com |
| آدرس صفحه اصلی | git+https://github.com/facebook/flow.git |
| آدرس اینترنتی | https://flow.org |
| مجوز | MIT |
# flow-remove-types
[](https://www.npmjs.com/package/flow-remove-types)
Turn your JavaScript with [Flow](https://flowtype.org/) type annotations into
standard JavaScript in an instant with no configuration and minimal setup.
[Flow](https://flow.org/) provides static type checking to JavaScript which
can both help find and detect bugs long before code is deployed and can make
code easier to read and more self-documenting. The Flow tool itself only reads
and analyzes code. Running code with Flow type annotations requires first
removing the annotations which are non-standard JavaScript. Typically this is
done via adding a plugin to your [Babel](https://babeljs.io/) configuration,
however Babel may be overkill if you're only targeting modern versions of
Node.js or just not using the modern ES2015 features that may not be in
every browser.
`flow-remove-types` is a faster, simpler, zero-configuration alternative with
minimal dependencies for super-fast `npm install` time.
## Getting Started
Use the command line:
```bash
npm install --global flow-remove-types
```
```bash
flow-remove-types --help
flow-remove-types input.js > output.js
```
Or the JavaScript API:
```bash
npm install flow-remove-types
```
```js
var flowRemoveTypes = require('flow-remove-types');
var fs = require('fs');
var input = fs.readFileSync('input.js', 'utf8');
var output = flowRemoveTypes(input);
fs.writeFileSync('output.js', output.toString());
```
When using the `flow-remove-types` script, be sure [not to direct the output to itself](https://superuser.com/questions/597244/why-does-redirecting-the-output-of-a-file-to-itself-produce-a-blank-file)!
## Use in Build Systems
**Rollup:** [`rollup-plugin-flow`](https://github.com/leebyron/rollup-plugin-flow)
**Browserify:** [`unflowify`](https://github.com/leebyron/unflowify)
**Webpack:** [`remove-flow-types-loader`](https://github.com/conorhastings/remove-flow-types-loader)
**Gulp:** [`gulp-flow-remove-types`](https://github.com/wain-pc/gulp-flow-remove-types)
## Use with existing development tools
* ESLint: [eslint-plugin-flowtype](https://github.com/gajus/eslint-plugin-flowtype)
* Mocha: `mocha -r flow-remove-types/register`
* Jest: Add to your config:
```js
transform: {
"^.+\\.js(?:\\.flow)?$": "flow-remove-types/jest"
}
```
## Use `flow-node`
Wherever you use `node` you can substitute `flow-node` and have a super fast
flow-types aware evaluator or REPL.
```bash
$ flow-node
> var x: number = 42
undefined
> x
42
```
> Note: This package is also available under the *alias* `flow-node` since it's
> often looked for at that location due to the popularity of this script. Both
> scripts are available no matter which package you install.
## Use the require hook
Using the require hook allows you to automatically compile files on the fly when
requiring in node, useful during development:
```js
require('flow-remove-types/register')
require('./some-module-with-flow-type-syntax')
```
You can also provide options to the require hook:
```js
// Transforms all files, not just those with a "@flow" comment.
require('flow-remove-types/register')({ all: true })
```
Use options to define exactly which files to `includes` or `excludes` with regular
expressions. All files are included by default except those found in the
`node_modules` folder, which is excluded by default.
```js
require('flow-remove-types/register')({ includes: /\/custom_path\// })
```
> **Don't use the require hook in packages distributed on NPM**
> As always, don't forget to use `flow-remove-types` to compile files before distributing
> your code on npm, as using the require hook affects the whole runtime and not
> just your module and may hurt the runtime performance of code that includes it.
## Dead-Simple Transforms
When `flow-remove-types` removes Flow types, it replaces them with whitespace.
This ensures that the transformed output has exactly the same number of lines
and characters and that all character offsets remain the same. This removes the
need for sourcemaps, maintains legible output, and ensures that it is super easy
to include `flow-remove-types` at any point in your existing build tools.
Built atop the official Flow [parser](https://github.com/facebook/flow/tree/master/packages/flow-parser),
`flow-remove-types` is designed to operate on the same syntax Flow itself understands.
It also passes through other common non-standard syntax such as [JSX](https://facebook.github.io/jsx/)
and experimental ECMAScript proposals that Flow supports.
**Before:**
```js
import SomeClass from 'some-module'
import type { SomeInterface } from 'some-module'
export class MyClass<T> extends SomeClass implements SomeInterface {
value: T
constructor(value: T) {
this.value = value
}
get(): T {
return this.value
}
}
```
**After:**
```js
import SomeClass from 'some-module'
export class MyClass extends SomeClass {
constructor(value ) {
this.value = value
}
get() {
return this.value
}
}
```
### Pretty Transform
Rather not have the whitespace? Pass the `--pretty` flag to remove the whitespace.
```bash
flow-remove-types --pretty --sourcemaps source.js
```
Or using the JS API:
```js
var flowRemoveTypes = require('flow-remove-types');
var fs = require('fs');
var input = fs.readFileSync('input.js', 'utf8');
var output = flowRemoveTypes(input, { pretty: true });
fs.writeFileSync('output.js', output.toString());
var sourceMap = output.generateMap();
fs.writeFileSync('output.js.map', JSON.stringify(sourceMap));
```
## Performance
> *NOTE*: These timings are for `flow-remove-types` v1.
### Install
Installing via `npm` from an empty project:
**flow-remove-types:**
```bash
time npm install flow-remove-types
real 0m3.193s
user 0m1.643s
sys 0m0.775s
```
**Babel:**
```bash
time npm install babel-cli babel-plugin-transform-flow-strip-types
real 0m23.200s
user 0m10.395s
sys 0m4.238s
```
### Transform
Transforming a directory of 20 files of 100 lines each:
**flow-remove-types:**
```bash
time flow-remove-types src/ --out-dir dest/
real 0m0.431s
user 0m0.436s
sys 0m0.068s
```
**Babel:**
```bash
time babel src/ --out-dir dest/
real 0m1.074s
user 0m1.092s
sys 0m0.149s
```
نیازمندی
| مقدار | نام |
|---|---|
| ^0.204.0 | flow-parser |
| ^3.0.2 | pirates |
| ^0.2.1 | vlq |
زبان مورد نیاز
| مقدار | نام |
|---|---|
| 12.22.7 | Npm |
نحوه نصب
نصب پکیج tgz flow-remove-types-2.204.0:
npm install flow-remove-types-2.204.0.tgz