nlcst-is-literal

nlcst utility to check if a node is meant literally.

Contents

• What is this?
• When should I use this?
• Install
• Use
• API
  • isLiteral(parent, index|child)
• Types
• Compatibility
• Related
• Contribute
• License

What is this?

This utility can check if a node is meant literally.

When should I use this?

This package is a tiny utility that helps when dealing with words. It’s useful if a tool wants to exclude values that are possibly void of meaning. For example, a spell-checker could exclude these literal words, thus not warning about “monsieur”.

Install

This package is ESM only. In Node.js (version 16+), install with npm:

npm install nlcst-is-literal

In Deno with esm.sh:

import {isLiteral} from 'https://esm.sh/nlcst-is-literal@3'

In browsers with esm.sh:

<script type="module">
  import {isLiteral} from 'https://esm.sh/nlcst-is-literal@3?bundle'
</script>

Use

Say our document example.txt contains:

The word “foo” is meant as a literal.

The word «bar» is meant as a literal.

The word (baz) is meant as a literal.

The word, qux, is meant as a literal.

The word — quux — is meant as a literal.

…and our module example.js looks as follows:

import {read} from 'to-vfile'
import {ParseEnglish} from 'parse-english'
import {visit} from 'unist-util-visit'
import {toString} from 'nlcst-to-string'
import {isLiteral} from 'nlcst-is-literal'

const file = await read('example.txt')
const tree = new ParseEnglish().parse(String(file))

visit(tree, 'WordNode', function (node, index, parent) {
  if (isLiteral(parent, index)) {
    console.log(toString(node))
  }
})

…now running node example.js yields:

foo
bar
baz
qux
quux

API

This package exports the identifier isLiteral. There is no default export.

isLiteral(parent, index|child)

Check if the child in parent at index is enclosed by matching delimiters.

For example, foo is literal in the following samples:

• Foo - is meant as a literal.
• Meant as a literal is - foo.
• The word “foo” is meant as a literal.

Parameters

• parent (Node) — parent node
• index (number) — index of child in parent
• child (Node) — child node of parent

Returns

Whether the child is a literal (boolean).

Types

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

Compatibility

Projects maintained by the unified collective are compatible with maintained versions of Node.js.

When we cut a new major release, we drop support for unmaintained versions of Node. This means we try to keep the current release line, nlcst-is-literal@^3, compatible with Node.js 16.

Related

• nlcst-normalize — normalize a word for easier comparison
• nlcst-search — search for patterns

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.

License

MIT © Titus Wormer