micromark-util-edit-map

micromark utility to batch changes to lists of events.

Contents

• What is this?
• When should I use this?
• Install
• Use
• API
  • EditMap()
  • EditMap#add(index, remove, add)
  • EditMap#addBefore(index, remove, add)
  • EditMap#consume(events)
• Types
• Compatibility
• Security
• Contribute
• License

What is this?

This package exposes an algorithm to batch changes to lists of events, needed when authoring complex resolvers, such as for tables or lists.

When should I use this?

This package is only useful when you are making your own micromark extensions that need to change many places in lists of events, such as injecting the result of parsing subcontent, or cleaning up how a construct is represented.

Install

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

npm install micromark-util-edit-map

In Deno with esm.sh:

import {EditMap} from 'https://esm.sh/micromark-util-edit-map@1'

In browsers with esm.sh:

<script type="module">
  import {EditMap} from 'https://esm.sh/micromark-util-edit-map@1?bundle'
</script>

Use

/**
 * @import {Event} from 'micromark-util-types'
 */

import {EditMap} from 'micromark-util-edit-map'

/** @type {Array<Event>} */
const events = [] // Assume this is filled.

const editMap = new EditMap()

editMap.add(1, 0, [['enter', events[2][1], events[2][2]]])
editMap.add(2, 1, [])

editMap.consume(events)

API

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

EditMap()

Create a new edit map.

Returns

New instance (EditMap).

EditMap#add(index, remove, add)

Create an edit: a remove and/or add at a certain place.

Parameters

• index (number) — index at which to apply the edit
• remove (number) — count of items to remove at the index
• add (Array<Event>) — items to add at the index

Returns

Nothing (undefined).

EditMap#addBefore(index, remove, add)

Create an edit: but insert add before existing additions at index, instead of after them.

Parameters

• index (number) — index at which to apply the edit
• remove (number) — count of items to remove at the index
• add (Array<Event>) — items to add at the index

Returns

Nothing (undefined).

EditMap#consume(events)

Done, change the events.

Parameters

• events (Array<Event>) — list of events to apply the edits to

Returns

Nothing (undefined).

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, micromark-util-edit-map@1, compatible with Node.js 16. This package works with micromark@4.

Security

This package is safe. See security.md in micromark/.github for how to submit a security report.

Contribute

See contributing.md in micromark/.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, organisation, or community you agree to abide by its terms.

License

MIT © Titus Wormer