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remark-lint-fenced-code-flag

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remark-lint-fenced-code-flag - npm Package Compare versions

Comparing version

3.1.2
to
4.0.0

index.d.ts.map

54

index.d.ts

@@ -1,39 +0,21 @@

export default remarkLintFencedCodeFlag
export type Root = import('mdast').Root
export default remarkLintFencedCodeFlag;
export type Root = import('mdast').Root;
/**
* Language flags.
*/
export type Flags = Array<string>
/**
* Configuration.
*/
export type FlagMap = {
/**
* Language flags.
*/
flags?: Flags
/**
* Allow language flags to be omitted (default: `false`).
*/
allowEmpty?: boolean
}
/**
* Options.
*/
export type Options = string[] | FlagMap
declare const remarkLintFencedCodeFlag: import('unified').Plugin<
| void[]
| [
| Options
| [
(
| boolean
| import('unified-lint-rule/lib/index.js').Label
| import('unified-lint-rule/lib/index.js').Severity
),
(Options | undefined)?
]
],
import('mdast').Root,
import('mdast').Root
>
export type Options = {
/**
* Allow language flags to be omitted (default: `false`).
*/
allowEmpty?: boolean | null | undefined;
/**
* Flags to allow,
* other flags will result in a warning (optional).
*/
flags?: ReadonlyArray<string> | null | undefined;
};
declare const remarkLintFencedCodeFlag: {
(config?: import("../../node_modules/unified-lint-rule/lib/index.js").Label | import("../../node_modules/unified-lint-rule/lib/index.js").Severity | readonly string[] | Readonly<Options> | [level: import("../../node_modules/unified-lint-rule/lib/index.js").Label | import("../../node_modules/unified-lint-rule/lib/index.js").Severity, option?: readonly string[] | Readonly<Options> | null | undefined] | null | undefined): ((tree: import("mdast").Root, file: import("vfile").VFile, next: import("unified").TransformCallback<import("mdast").Root>) => undefined) | undefined;
readonly name: string;
};
//# sourceMappingURL=index.d.ts.map

240

index.js
/**
* remark-lint rule to warn when language flags of fenced code
* are not used.
*
* ## What is this?
*
* This package checks the language flags of fenced code blocks,
* whether they exist,
* and optionally what values they hold.
*
* ## When should I use this?
*
* You can use this package to check that language flags of fenced code
* are used and consistent.
* You can use this package to check that the style of language flags of fenced
* code blocks is consistent.
*
* ## API
*
* The following options (default: `undefined`) are accepted:
* ### `unified().use(remarkLintFencedCodeFlag[, options])`
*
* * `Array<string>`
* — as if passing `{flags: options}`
* * `Object` with the following fields:
* * `allowEmpty` (`boolean`, default: `false`)
* — allow language flags to be omitted
* * `flags` (`Array<string>` default: `[]`)
* — specific flags to allow (other flags will result in a warning)
* Warn when language flags of fenced code are not used.
*
* ###### Parameters
*
* * `options` ([`Options`][api-options] or `Array<string>`, optional)
* — configuration or flags to allow
*
* ###### Returns
*
* Transform ([`Transformer` from `unified`][github-unified-transformer]).
*
* ### `Options`
*
* Configuration (TypeScript type).
*
* ###### Fields
*
* * `allowEmpty` (`boolean`, default: `false`)
* — allow language flags to be omitted
* * `flags` (`Array<string>`, optional)
* — flags to allow,
* other flags will result in a warning
*
* ## Recommendation
*
* While omitting the language flag is perfectly fine to signal that the code is
* plain text, it *could* point to a mistake.
* It’s recommended to instead use a certain flag for plain text (such as `txt`)
* and to turn this rule on.
* While omitting language flags is fine to signal that code is plain text,
* it *could* point to a mistake.
* It’s recommended to instead use a certain flag for plain text (such as
* `txt`) and to turn this rule on.
*
* [api-options]: #options
* [api-remark-lint-fenced-code-flag]: #unifieduseremarklintfencedcodeflag-options
* [github-unified-transformer]: https://github.com/unifiedjs/unified#transformer
*
* @module fenced-code-flag
* @summary
* remark-lint rule to check that language flags of fenced code are used.
* @author Titus Wormer

@@ -36,62 +62,77 @@ * @copyright 2015 Titus Wormer

*
* ```alpha
* bravo()
* Some markdown:
*
* ```markdown
* # Mercury
* ```
*
* @example
* {"name": "not-ok.md", "label": "input"}
* {"label": "input", "name": "not-ok.md"}
*
* ```
* alpha()
* mercury()
* ```
*
* @example
* {"name": "not-ok.md", "label": "output"}
* {"label": "output", "name": "not-ok.md"}
*
* 1:1-3:4: Missing code language flag
* 1:1-3:4: Unexpected missing fenced code language flag in info string, expected keyword
*
* @example
* {"name": "ok.md", "config": {"allowEmpty": true}}
* {"config": {"allowEmpty": true}, "name": "ok-allow-empty.md"}
*
* ```
* alpha()
* mercury()
* ```
*
* @example
* {"name": "not-ok.md", "config": {"allowEmpty": false}, "label": "input"}
* {"config": {"allowEmpty": false}, "label": "input", "name": "not-ok-allow-empty.md"}
*
* ```
* alpha()
* mercury()
* ```
* @example
* {"config": {"allowEmpty": false}, "label": "output", "name": "not-ok-allow-empty.md"}
*
* 1:1-3:4: Unexpected missing fenced code language flag in info string, expected keyword
*
* @example
* {"name": "not-ok.md", "config": {"allowEmpty": false}, "label": "output"}
* {"config": ["markdown"], "name": "ok-array.md"}
*
* 1:1-3:4: Missing code language flag
* ```markdown
* # Mercury
* ```
*
* @example
* {"name": "ok.md", "config": ["alpha"]}
* {"config": {"flags":["markdown"]}, "name": "ok-options.md"}
*
* ```alpha
* bravo()
* ```markdown
* # Mercury
* ```
*
* @example
* {"name": "ok.md", "config": {"flags":["alpha"]}}
* {"config": ["markdown"], "label": "input", "name": "not-ok-array.md"}
*
* ```alpha
* bravo()
* ```javascript
* mercury()
* ```
* @example
* {"config": ["markdown"], "label": "output", "name": "not-ok-array.md"}
*
* 1:1-3:4: Unexpected fenced code language flag `javascript` in info string, expected `markdown`
*
* @example
* {"name": "not-ok.md", "config": ["charlie"], "label": "input"}
* {"config": ["javascript", "markdown", "mdx", "typescript"], "label": "input", "name": "not-ok-long-array.md"}
*
* ```alpha
* bravo()
* ```html
* <h1>Mercury</h1>
* ```
* @example
* {"config": ["javascript", "markdown", "mdx", "typescript"], "label": "output", "name": "not-ok-long-array.md"}
*
* 1:1-3:4: Unexpected fenced code language flag `html` in info string, expected `javascript`, `markdown`, `mdx`, …
*
* @example
* {"name": "not-ok.md", "config": ["charlie"], "label": "output"}
* {"config": "🌍", "label": "output", "name": "not-ok-options.md", "positionless": true}
*
* 1:1-3:4: Incorrect code language flag
* 1:1: Unexpected value `🌍` for `options`, expected array or object
*/

@@ -104,23 +145,22 @@

/**
* @typedef {Array<string>} Flags
* Language flags.
*
* @typedef FlagMap
* @typedef Options
* Configuration.
* @property {Flags} [flags]
* Language flags.
* @property {boolean} [allowEmpty=false]
* @property {boolean | null | undefined} [allowEmpty=false]
* Allow language flags to be omitted (default: `false`).
*
* @typedef {Flags | FlagMap} Options
* Options.
* @property {ReadonlyArray<string> | null | undefined} [flags]
* Flags to allow,
* other flags will result in a warning (optional).
*/
import {quotation} from 'quotation'
import {phrasing} from 'mdast-util-phrasing'
import {lintRule} from 'unified-lint-rule'
import {visit} from 'unist-util-visit'
import {pointStart, pointEnd} from 'unist-util-position'
import {generated} from 'unist-util-generated'
import {pointEnd, pointStart} from 'unist-util-position'
import {SKIP, visitParents} from 'unist-util-visit-parents'
const fence = /^ {0,3}([~`])\1{2,}/
const listFormat = new Intl.ListFormat('en', {type: 'disjunction'})
const listFormatUnit = new Intl.ListFormat('en', {type: 'unit'})
const remarkLintFencedCodeFlag = lintRule(

@@ -131,35 +171,87 @@ {

},
/** @type {import('unified-lint-rule').Rule<Root, Options>} */
(tree, file, option) => {
/**
* @param {Root} tree
* Tree.
* @param {Readonly<Options> | ReadonlyArray<string> | null | undefined} [options]
* Configuration or flags to allow (optional).
* @returns {undefined}
* Nothing.
*/
function (tree, file, options) {
const value = String(file)
let allowEmpty = false
/** @type {Array<string>} */
let allowed = []
/** @type {ReadonlyArray<string> | undefined} */
let allowed
if (typeof option === 'object') {
if (Array.isArray(option)) {
allowed = option
if (options === null || options === undefined) {
// Empty.
} else if (typeof options === 'object') {
// Note: casts because `isArray` and `readonly` don’t mix.
if (Array.isArray(options)) {
const flags = /** @type {ReadonlyArray<string>} */ (options)
allowed = flags
} else {
allowEmpty = Boolean(option.allowEmpty)
const settings = /** @type {Options} */ (options)
allowEmpty = settings.allowEmpty === true
if (option.flags) {
allowed = option.flags
if (settings.flags) {
allowed = settings.flags
}
}
} else {
file.fail(
'Unexpected value `' +
options +
'` for `options`, expected array or object'
)
}
visit(tree, 'code', (node) => {
if (!generated(node)) {
/** @type {string} */
let allowedDisplay
if (allowed) {
allowedDisplay =
allowed.length > 3
? listFormatUnit.format([...quotation(allowed.slice(0, 3), '`'), '…'])
: listFormat.format(quotation(allowed, '`'))
} else {
allowedDisplay = 'keyword'
}
visitParents(tree, function (node, parents) {
// Do not walk into phrasing.
if (phrasing(node)) {
return SKIP
}
if (node.type !== 'code') return
const end = pointEnd(node)
const start = pointStart(node)
if (
end &&
start &&
typeof end.offset === 'number' &&
typeof start.offset === 'number'
) {
if (node.lang) {
if (allowed.length > 0 && !allowed.includes(node.lang)) {
file.message('Incorrect code language flag', node)
if (allowed && !allowed.includes(node.lang)) {
file.message(
'Unexpected fenced code language flag `' +
node.lang +
'` in info string, expected ' +
allowedDisplay,
{ancestors: [...parents, node], place: node.position}
)
}
} else {
const slice = value.slice(
pointStart(node).offset,
pointEnd(node).offset
)
} else if (!allowEmpty) {
const slice = value.slice(start.offset, end.offset)
if (!allowEmpty && fence.test(slice)) {
file.message('Missing code language flag', node)
if (fence.test(slice)) {
file.message(
'Unexpected missing fenced code language flag in info string, expected ' +
allowedDisplay,
{ancestors: [...parents, node], place: node.position}
)
}

@@ -166,0 +258,0 @@ }

50

package.json
{
"name": "remark-lint-fenced-code-flag",
"version": "3.1.2",
"version": "4.0.0",
"description": "remark-lint rule to warn when fenced code blocks occur without language flag",
"license": "MIT",
"keywords": [
"code",
"fenced",
"flag",
"infostring",
"lint",
"remark",
"lint",
"rule",
"remark-lint",
"remark-lint-rule",
"fenced",
"code",
"flag",
"infostring"
"rule"
],
"repository": {
"type": "git",
"url": "https://github.com/remarkjs/remark-lint",
"directory": "packages/remark-lint-fenced-code-flag"
},
"repository": "https://github.com/remarkjs/remark-lint/tree/main/packages/remark-lint-fenced-code-flag",
"bugs": "https://github.com/remarkjs/remark-lint/issues",

@@ -28,28 +25,33 @@ "funding": {

"contributors": [
"Titus Wormer <tituswormer@gmail.com> (https://wooorm.com)"
"Titus Wormer <tituswormer@gmail.com>"
],
"sideEffects": false,
"type": "module",
"main": "index.js",
"types": "index.d.ts",
"exports": "./index.js",
"files": [
"index.d.ts",
"index.d.ts.map",
"index.js"
],
"dependencies": {
"@types/mdast": "^3.0.0",
"unified": "^10.0.0",
"unified-lint-rule": "^2.0.0",
"unist-util-generated": "^2.0.0",
"unist-util-position": "^4.0.0",
"unist-util-visit": "^4.0.0"
"@types/mdast": "^4.0.0",
"mdast-util-phrasing": "^4.0.0",
"quotation": "^2.0.0",
"unified-lint-rule": "^3.0.0",
"unist-util-position": "^5.0.0",
"unist-util-visit-parents": "^6.0.0"
},
"scripts": {},
"xo": false,
"typeCoverage": {
"atLeast": 100,
"detail": true,
"strict": true,
"ignoreCatch": true
"ignoreCatch": true,
"strict": true
},
"xo": {
"prettier": true,
"rules": {
"capitalized-comments": "off"
}
}
}

286

readme.md

@@ -5,43 +5,45 @@ <!--This file is generated-->

[![Build][build-badge]][build]
[![Coverage][coverage-badge]][coverage]
[![Downloads][downloads-badge]][downloads]
[![Size][size-badge]][size]
[![Sponsors][sponsors-badge]][collective]
[![Backers][backers-badge]][collective]
[![Chat][chat-badge]][chat]
[![Build][badge-build-image]][badge-build-url]
[![Coverage][badge-coverage-image]][badge-coverage-url]
[![Downloads][badge-downloads-image]][badge-downloads-url]
[![Size][badge-size-image]][badge-size-url]
[![Sponsors][badge-funding-sponsors-image]][badge-funding-url]
[![Backers][badge-funding-backers-image]][badge-funding-url]
[![Chat][badge-chat-image]][badge-chat-url]
[`remark-lint`][mono] rule to check that language flags of fenced code are used.
[`remark-lint`][github-remark-lint] rule to warn when language flags of fenced code
are not used.
## Contents
* [What is this?](#what-is-this)
* [When should I use this?](#when-should-i-use-this)
* [Presets](#presets)
* [Install](#install)
* [Use](#use)
* [API](#api)
* [`unified().use(remarkLintFencedCodeFlag[, config])`](#unifieduseremarklintfencedcodeflag-config)
* [Recommendation](#recommendation)
* [Examples](#examples)
* [Compatibility](#compatibility)
* [Contribute](#contribute)
* [License](#license)
* [What is this?](#what-is-this)
* [When should I use this?](#when-should-i-use-this)
* [Presets](#presets)
* [Install](#install)
* [Use](#use)
* [API](#api)
* [`unified().use(remarkLintFencedCodeFlag[, options])`](#unifieduseremarklintfencedcodeflag-options)
* [`Options`](#options)
* [Recommendation](#recommendation)
* [Examples](#examples)
* [Compatibility](#compatibility)
* [Contribute](#contribute)
* [License](#license)
## What is this?
This package is a [unified][] ([remark][]) plugin, specifically a `remark-lint`
rule.
Lint rules check markdown code style.
This package checks the language flags of fenced code blocks,
whether they exist,
and optionally what values they hold.
## When should I use this?
You can use this package to check that language flags of fenced code
are used and consistent.
You can use this package to check that the style of language flags of fenced
code blocks is consistent.
## Presets
This rule is included in the following presets:
This plugin is included in the following presets:
| Preset | Setting |
| Preset | Options |
| - | - |

@@ -52,4 +54,5 @@ | [`remark-preset-lint-markdown-style-guide`](https://github.com/remarkjs/remark-lint/tree/main/packages/remark-preset-lint-markdown-style-guide) | `{ allowEmpty: false }` |

This package is [ESM only][esm].
In Node.js (version 12.20+, 14.14+, or 16.0+), install with [npm][]:
This package is [ESM only][github-gist-esm].
In Node.js (version 16+),
install with [npm][npm-install]:

@@ -60,13 +63,13 @@ ```sh

In Deno with [`esm.sh`][esmsh]:
In Deno with [`esm.sh`][esm-sh]:
```js
import remarkLintFencedCodeFlag from 'https://esm.sh/remark-lint-fenced-code-flag@3'
import remarkLintFencedCodeFlag from 'https://esm.sh/remark-lint-fenced-code-flag@4'
```
In browsers with [`esm.sh`][esmsh]:
In browsers with [`esm.sh`][esm-sh]:
```html
<script type="module">
import remarkLintFencedCodeFlag from 'https://esm.sh/remark-lint-fenced-code-flag@3?bundle'
import remarkLintFencedCodeFlag from 'https://esm.sh/remark-lint-fenced-code-flag@4?bundle'
</script>

@@ -80,18 +83,20 @@ ```

```js
import remarkLint from 'remark-lint'
import remarkLintFencedCodeFlag from 'remark-lint-fenced-code-flag'
import remarkParse from 'remark-parse'
import remarkStringify from 'remark-stringify'
import {read} from 'to-vfile'
import {unified} from 'unified'
import {reporter} from 'vfile-reporter'
import {remark} from 'remark'
import remarkLint from 'remark-lint'
import remarkLintFencedCodeFlag from 'remark-lint-fenced-code-flag'
main()
const file = await read('example.md')
async function main() {
const file = await remark()
.use(remarkLint)
.use(remarkLintFencedCodeFlag)
.process(await read('example.md'))
await unified()
.use(remarkParse)
.use(remarkLint)
.use(remarkLintFencedCodeFlag)
.use(remarkStringify)
.process(file)
console.error(reporter(file))
}
console.error(reporter(file))
```

@@ -102,3 +107,3 @@

```sh
remark --use remark-lint --use remark-lint-fenced-code-flag example.md
remark --frail --use remark-lint --use remark-lint-fenced-code-flag .
```

@@ -124,25 +129,38 @@

This package exports no identifiers.
The default export is `remarkLintFencedCodeFlag`.
It exports the [TypeScript][typescript] type
[`Options`][api-options].
The default export is
[`remarkLintFencedCodeFlag`][api-remark-lint-fenced-code-flag].
### `unified().use(remarkLintFencedCodeFlag[, config])`
### `unified().use(remarkLintFencedCodeFlag[, options])`
This rule supports standard configuration that all remark lint rules accept
(such as `false` to turn it off or `[1, options]` to configure it).
Warn when language flags of fenced code are not used.
The following options (default: `undefined`) are accepted:
###### Parameters
* `Array<string>`
— as if passing `{flags: options}`
* `Object` with the following fields:
* `allowEmpty` (`boolean`, default: `false`)
— allow language flags to be omitted
* `flags` (`Array<string>` default: `[]`)
— specific flags to allow (other flags will result in a warning)
* `options` ([`Options`][api-options] or `Array<string>`, optional)
— configuration or flags to allow
###### Returns
Transform ([`Transformer` from `unified`][github-unified-transformer]).
### `Options`
Configuration (TypeScript type).
###### Fields
* `allowEmpty` (`boolean`, default: `false`)
— allow language flags to be omitted
* `flags` (`Array<string>`, optional)
— flags to allow,
other flags will result in a warning
## Recommendation
While omitting the language flag is perfectly fine to signal that the code is
plain text, it *could* point to a mistake.
It’s recommended to instead use a certain flag for plain text (such as `txt`)
and to turn this rule on.
While omitting language flags is fine to signal that code is plain text,
it *could* point to a mistake.
It’s recommended to instead use a certain flag for plain text (such as
`txt`) and to turn this rule on.

@@ -156,4 +174,6 @@ ## Examples

````markdown
```alpha
bravo()
Some markdown:
```markdown
# Mercury
```

@@ -172,3 +192,3 @@ ````

```
alpha()
mercury()
```

@@ -180,6 +200,6 @@ ````

```text
1:1-3:4: Missing code language flag
1:1-3:4: Unexpected missing fenced code language flag in info string, expected keyword
```
##### `ok.md`
##### `ok-allow-empty.md`

@@ -192,3 +212,3 @@ When configured with `{ allowEmpty: true }`.

```
alpha()
mercury()
```

@@ -201,3 +221,3 @@ ````

##### `not-ok.md`
##### `not-ok-allow-empty.md`

@@ -210,3 +230,3 @@ When configured with `{ allowEmpty: false }`.

```
alpha()
mercury()
```

@@ -218,8 +238,8 @@ ````

```text
1:1-3:4: Missing code language flag
1:1-3:4: Unexpected missing fenced code language flag in info string, expected keyword
```
##### `ok.md`
##### `ok-array.md`
When configured with `[ 'alpha' ]`.
When configured with `[ 'markdown' ]`.

@@ -229,4 +249,4 @@ ###### In

````markdown
```alpha
bravo()
```markdown
# Mercury
```

@@ -239,5 +259,5 @@ ````

##### `ok.md`
##### `ok-options.md`
When configured with `{ flags: [ 'alpha' ] }`.
When configured with `{ flags: [ 'markdown' ] }`.

@@ -247,4 +267,4 @@ ###### In

````markdown
```alpha
bravo()
```markdown
# Mercury
```

@@ -257,5 +277,5 @@ ````

##### `not-ok.md`
##### `not-ok-array.md`
When configured with `[ 'charlie' ]`.
When configured with `[ 'markdown' ]`.

@@ -265,4 +285,4 @@ ###### In

````markdown
```alpha
bravo()
```javascript
mercury()
```

@@ -274,19 +294,51 @@ ````

```text
1:1-3:4: Incorrect code language flag
1:1-3:4: Unexpected fenced code language flag `javascript` in info string, expected `markdown`
```
##### `not-ok-long-array.md`
When configured with `[ 'javascript', 'markdown', 'mdx', 'typescript' ]`.
###### In
````markdown
```html
<h1>Mercury</h1>
```
````
###### Out
```text
1:1-3:4: Unexpected fenced code language flag `html` in info string, expected `javascript`, `markdown`, `mdx`, …
```
##### `not-ok-options.md`
When configured with `'🌍'`.
###### Out
```text
1:1: Unexpected value `🌍` for `options`, expected array or object
```
## Compatibility
Projects maintained by the unified collective are compatible with all maintained
Projects maintained by the unified collective are compatible with maintained
versions of Node.js.
As of now, that is Node.js 12.20+, 14.14+, and 16.0+.
Our projects sometimes work with older versions, but this is not guaranteed.
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,
`remark-lint-fenced-code-flag@4`,
compatible with Node.js 16.
## Contribute
See [`contributing.md`][contributing] in [`remarkjs/.github`][health] for ways
See [`contributing.md`][github-dotfiles-contributing] in [`remarkjs/.github`][github-dotfiles-health] for ways
to get started.
See [`support.md`][support] for ways to get help.
See [`support.md`][github-dotfiles-support] for ways to get help.
This project has a [code of conduct][coc].
This project has a [code of conduct][github-dotfiles-coc].
By interacting with this repository, organization, or community you agree to

@@ -297,52 +349,56 @@ abide by its terms.

[MIT][license] © [Titus Wormer][author]
[MIT][file-license] © [Titus Wormer][author]
[build-badge]: https://github.com/remarkjs/remark-lint/workflows/main/badge.svg
[api-options]: #options
[build]: https://github.com/remarkjs/remark-lint/actions
[api-remark-lint-fenced-code-flag]: #unifieduseremarklintfencedcodeflag-options
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