Micromark-factory-mdx-expression NPM

micromark-factory-mdx-expression

micromark factory to parse MDX expressions (found in JSX attributes, flow, text).

Install

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

npm install micromark-factory-mdx-expression

In Deno with esm.sh:

import {factoryMdxExpression} from 'https://esm.sh/micromark-factory-mdx-expression@2'

In browsers with esm.sh:

<script type="module">
  import {factoryMdxExpression} from 'https://esm.sh/micromark-factory-mdx-expression@2?bundle'
</script>

Use

import {ok as assert} from 'devlop'
import {factoryMdxExpression} from 'micromark-factory-mdx-expression'
import {codes} from 'micromark-util-symbol'

// A micromark tokenizer that uses the factory:
/** @type {Tokenizer} */
function tokenizeFlowExpression(effects, ok, nok) {
  return start

  // …

  /** @type {State} */
  function start(code) {
    assert(code === codes.leftCurlyBrace, 'expected `{`')
    return factoryMdxExpression.call(
      self,
      effects,
      factorySpace(effects, after, types.whitespace),
      'mdxFlowExpression',
      'mdxFlowExpressionMarker',
      'mdxFlowExpressionChunk',
      acorn,
      acornOptions,
      addResult,
      spread,
      allowEmpty
    )(code)
  }

  // …
}

API

This module exports the identifier factoryMdxExpression. There is no default export.

The export map supports the development condition. Run node --conditions development module.js to get instrumented dev code. Without this condition, production code is loaded.

`factoryMdxExpression(…)`

Parameters

effects (Effects) — context
ok (State) — state switched to when successful
type (string) — token type for whole ({})
markerType (string) — token type for the markers ({, })
chunkType (string) — token type for the value (1)
acorn (Acorn) — object with acorn.parse and acorn.parseExpressionAt
acornOptions (AcornOptions) — configuration for acorn
boolean (addResult, default: false) — add estree to token
boolean (spread, default: false) — support a spread ({...a}) only
boolean (allowEmpty, default: false) — support an empty expression
boolean (allowLazy, default: false) — support lazy continuation of an expression

Returns

State.

Types

This package is fully typed with TypeScript. It exports the additional types Acorn and AcornOptions.

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, micromark-factory-mdx-expression@^2, compatible with Node.js 16.

This package works with micromark version 3 and later.