forked from FINAKON/HelpProject
1. Initial Commit - a boiler plate code and POC to realize the concept of context sensitive help 2. Frontend code written in ReactJS 3. Backend code written in Java, Spring Boot Framework 4. Frontend Start: pre-requisites : node, npm npm run dev ==> to start the frontend vite server 5. Backend Start: pre-requisites : java, mvn mvn spring-boot:run ==> to start the backend server 6. Visit http://localhost:5173/ for basic demo of help, press F1 in textboxes 7. Visit http://localhost:5173/editor and enter "admin123" to add/modify texts. Happy Coding !!! Thank you, Bhargava.
244 lines
6.4 KiB
Markdown
244 lines
6.4 KiB
Markdown
# unist-util-position
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[![Build][build-badge]][build]
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[![Coverage][coverage-badge]][coverage]
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[![Downloads][downloads-badge]][downloads]
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[![Size][size-badge]][size]
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[![Sponsors][sponsors-badge]][collective]
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[![Backers][backers-badge]][collective]
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[![Chat][chat-badge]][chat]
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[unist][] utility to get positional info of nodes.
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## Contents
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* [What is this?](#what-is-this)
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* [When should I use this?](#when-should-i-use-this)
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* [Install](#install)
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* [Use](#use)
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* [API](#api)
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* [`position(node)`](#positionnode)
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* [`pointEnd(node)`](#pointendnode)
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* [`pointStart(node)`](#pointstartnode)
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* [Types](#types)
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* [Compatibility](#compatibility)
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* [Related](#related)
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* [Contribute](#contribute)
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* [License](#license)
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## What is this?
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This utility helps with accessing positional info on a potentially dirty tree.
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## When should I use this?
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The positional info is typically consistent and proper in unist trees generated
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by our ecosystem, but, user plugins could mess that up.
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If you’re making a reusable plugin, and accessing the positional info often, you
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might want to guard against that by using this utility.
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You might also find the utility [`unist-util-generated`][unist-util-generated]
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useful to check whether a node is considered to be generated (not in the
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original input file).
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You might also enjoy
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[`unist-util-stringify-position`][unist-util-stringify-position] when you want
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to display positional info to users.
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## Install
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This package is [ESM only][esm].
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In Node.js (version 16+), install with [npm][]:
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```sh
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npm install unist-util-position
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```
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In Deno with [`esm.sh`][esmsh]:
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```js
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import {pointEnd, pointStart, position} from 'https://esm.sh/unist-util-position@5'
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```
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In browsers with [`esm.sh`][esmsh]:
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```html
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<script type="module">
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import {pointEnd, pointStart, position} from 'https://esm.sh/unist-util-position@5?bundle'
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</script>
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```
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## Use
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```js
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import {fromMarkdown} from 'mdast-util-from-markdown'
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import {pointEnd, pointStart, position} from 'unist-util-position'
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const tree = fromMarkdown('# foo\n\n* bar\n')
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console.log(position(tree))
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console.log(pointStart(tree))
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console.log(pointEnd(tree))
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```
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Yields:
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```js
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{start: {line: 1, column: 1, offset: 0}, end: {line: 4, column: 1, offset: 13}}
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{line: 1, column: 1, offset: 0}
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{line: 4, column: 1, offset: 13}
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```
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## API
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This package exports the identifiers [`pointEnd`][pointend],
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[`pointStart`][pointstart], and [`position`][position].
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There is no default export.
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### `position(node)`
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Get the positional info of `node`.
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###### Parameters
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* `node` ([`Node`][node])
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— node
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###### Returns
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Position, if valid ([`Position`][unist-position] or `undefined`).
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### `pointEnd(node)`
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Get the ending point of `node`.
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###### Parameters
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* `node` ([`Node`][node])
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— node
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###### Returns
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Point, if valid ([`Point`][unist-point] or `undefined`).
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### `pointStart(node)`
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Get the starting point of `node`.
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###### Parameters
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* `node` ([`Node`][node])
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— node
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###### Returns
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Point, if valid ([`Point`][unist-point] or `undefined`).
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## Types
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This package is fully typed with [TypeScript][].
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It exports no additional types.
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## Compatibility
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Projects maintained by the unified collective are compatible with maintained
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versions of Node.js.
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When we cut a new major release, we drop support for unmaintained versions of
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Node.
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This means we try to keep the current release line, `unist-util-position@^5`,
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compatible with Node.js 16.
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## Related
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* [`unist-util-stringify-position`](https://github.com/syntax-tree/unist-util-stringify-position)
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— serialize a node, position, or point as a human readable location
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* [`unist-util-position-from-estree`](https://github.com/syntax-tree/unist-util-position-from-estree)
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— get a position from an estree node
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* [`unist-util-remove-position`](https://github.com/syntax-tree/unist-util-remove-position)
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— remove positions from tree
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* [`unist-util-generated`](https://github.com/syntax-tree/unist-util-generated)
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— check if a node is generated
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* [`unist-util-source`](https://github.com/syntax-tree/unist-util-source)
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— get the source of a node
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## Contribute
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See [`contributing.md`][contributing] in [`syntax-tree/.github`][health] for
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ways to get started.
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See [`support.md`][support] for ways to get help.
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This project has a [code of conduct][coc].
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By interacting with this repository, organization, or community you agree to
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abide by its terms.
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## License
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[MIT][license] © [Titus Wormer][author]
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<!-- Definitions -->
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[build-badge]: https://github.com/syntax-tree/unist-util-position/workflows/main/badge.svg
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[build]: https://github.com/syntax-tree/unist-util-position/actions
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[coverage-badge]: https://img.shields.io/codecov/c/github/syntax-tree/unist-util-position.svg
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[coverage]: https://codecov.io/github/syntax-tree/unist-util-position
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[downloads-badge]: https://img.shields.io/npm/dm/unist-util-position.svg
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[downloads]: https://www.npmjs.com/package/unist-util-position
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[size-badge]: https://img.shields.io/badge/dynamic/json?label=minzipped%20size&query=$.size.compressedSize&url=https://deno.bundlejs.com/?q=unist-util-position
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[size]: https://bundlejs.com/?q=unist-util-position
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[sponsors-badge]: https://opencollective.com/unified/sponsors/badge.svg
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[backers-badge]: https://opencollective.com/unified/backers/badge.svg
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[collective]: https://opencollective.com/unified
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[chat-badge]: https://img.shields.io/badge/chat-discussions-success.svg
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[chat]: https://github.com/syntax-tree/unist/discussions
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[npm]: https://docs.npmjs.com/cli/install
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[esm]: https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c
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[esmsh]: https://esm.sh
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[typescript]: https://www.typescriptlang.org
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[license]: license
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[author]: https://wooorm.com
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[health]: https://github.com/syntax-tree/.github
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[contributing]: https://github.com/syntax-tree/.github/blob/main/contributing.md
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[support]: https://github.com/syntax-tree/.github/blob/main/support.md
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[coc]: https://github.com/syntax-tree/.github/blob/main/code-of-conduct.md
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[unist]: https://github.com/syntax-tree/unist
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[node]: https://github.com/syntax-tree/unist#node
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[unist-position]: https://github.com/syntax-tree/unist#position
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[unist-point]: https://github.com/syntax-tree/unist#point
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[unist-util-generated]: https://github.com/syntax-tree/unist-util-generated
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[unist-util-stringify-position]: https://github.com/syntax-tree/unist-util-stringify-position
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[position]: #positionnode
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[pointend]: #pointendnode
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[pointstart]: #pointstartnode
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