Package Exports

estree-util-is-identifier-name
estree-util-is-identifier-name/index.js

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 (estree-util-is-identifier-name) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

estree-util-is-identifier-name

estree utility to check if something can be an identifier.

What is this?
When should I use this?
Install
Use
API
Types
Compatibility
Related
Contribute
License

What is this?

This package is a utility that can be used to check if something can be an identifier name. For example, a, _, and a1 are fine, but 1 and - are not.

When should I use this?

You can use this utility when generating IDs from strings or parsing IDs.

Install

This package is ESM only. In Node.js (version 12.20+, 14.14+, 16.0+, or 18.0+), install with npm:

npm install estree-util-is-identifier-name

In Deno with esm.sh:

import * as isIdentifierName from 'https://esm.sh/estree-util-is-identifier-name@2'

In browsers with esm.sh:

<script type="module">
  import * as isIdentifierName from 'https://esm.sh/estree-util-is-identifier-name@2?bundle'
</script>

Use

import {name, start, cont} from 'estree-util-is-identifier-name'

name('$something69') // => true
name('69') // => false
name('var') // => true (this does not handle keywords)

start(48) // => false (character code for `0`)
cont(48) // => true (character code for `0`)

API

This package exports the identifiers name, start, and cont. There is no default export.

`name(value)`

Checks if value (string) is a valid identifier name (boolean).

`start(code)`

Checks if the given character code (number) can start an identifier (boolean).

`cont(code)`

Checks if the given character code (number) can continue an identifier (boolean).

Types

This package is fully typed with TypeScript. It exports no additional types.

Compatibility

Projects maintained by the unified collective are compatible with all maintained versions of Node.js. As of now, that is Node.js 12.20+, 14.14+, 16.0+, and 18.0+. Our projects sometimes work with older versions, but this is not guaranteed.

goto-bus-stop/estree-is-identifier — check if an AST node is an identifier

Contribute

See contributing.md in syntax-tree/.github for ways to get started. See support.md for ways to get help.

This project has a code of conduct. By interacting with this repository, organization, or community you agree to abide by its terms.