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cli-highlight-esm
Advanced tools
Readme
Syntax highlighting in your terminal
Output a file
$ highlight package.json
Color output of another program with piping. Example: A database migration script that logs SQL Queries
$ db-migrate --dry-run | highlight
Command line options:
Usage: highlight [options] [file]
Outputs a file or STDIN input with syntax highlighting
Options:
--language, -l Set the langugage explicitely
If omitted will try to auto-detect
--theme, -t Use a theme defined in a JSON file
--version, -v Show version number [boolean]
--help, -h Show help [boolean]
You can use this module programmatically to highlight logs of your Node app. Example:
const highlight = require('cli-highlight').highlight
const Sequelize = require('sequelize')
const db = new Sequelize(process.env.DB, {
logging(log) {
console.log(highlight(log, {language: 'sql', ignoreIllegals: true}))
}
})
Detailed API documenation can be found here.
You can write your own theme in a JSON file and pass it with --theme
.
The key must be one of the highlight.js CSS class names
and the value must be one or an array of Chalk styles to be applied to that token.
{
"keyword": "blue",
"built_in": ["cyan", "dim"],
"string": "red"
}
The theme is combined with the default theme. The default theme is still not colored a lot or optimized for many languages, PRs welcome!
All languages of highlight.js are supported. Check a CI build for examples of all the different languages and their highlighting.
The module is written in TypeScript and can be compiled with npm run build
.
npm run watch
starts tsc
in watch mode. Tests are written with mocha.
Improving language support is done by adding more colors to the tokens in the default theme and writing more tests.
FAQs
Syntax highlighting in your terminal
The npm package cli-highlight-esm receives a total of 1 weekly downloads. As such, cli-highlight-esm popularity was classified as not popular.
We found that cli-highlight-esm demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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