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chalk-template
Advanced tools
Readme
Terminal string styling with tagged template literals
npm install chalk-template
For printing to standard output (stdout):
import chalkTemplate from 'chalk-template';
import chalk from 'chalk';
console.log(chalkTemplate`
CPU: {red ${cpu.totalPercent}%}
RAM: {green ${ram.used / ram.total * 100}%}
DISK: {rgb(255,131,0) ${disk.used / disk.total * 100}%}
`);
console.log(chalk.red.bgBlack(chalkTemplate`2 + 3 = {bold ${2 + 3}}`));
const miles = 18;
const calculateFeet = miles => miles * 5280;
console.log(chalkTemplate`
There are {bold 5280 feet} in a mile.
In {bold ${miles} miles}, there are {green.bold ${calculateFeet(miles)} feet}.
`);
console.log(chalkTemplate`
There are also {#FF0000 shorthand hex styles} for
both the {#ABCDEF foreground}, {#:123456 background},
or {#ABCDEF:123456 both}.
`);
For printing to standard error (stderr):
import {chalkTemplateStderr} from 'chalk-template';
console.error(chalkTemplateStderr`
CPU: {red ${cpu.totalPercent}%}
RAM: {green ${ram.used / ram.total * 100}%}
DISK: {rgb(255,131,0) ${disk.used / disk.total * 100}%}
`);
Blocks are delimited by an opening curly brace ({
), a style, some content, and a closing curly brace (}
).
Template styles are chained exactly like normal Chalk styles. The following two statements are equivalent:
import chalk from 'chalk';
import chalkTemplate from 'chalk-template';
console.log(chalk.bold.rgb(10, 100, 200)('Hello!'));
console.log(chalkTemplate`{bold.rgb(10,100,200) Hello!}`);
Note that function styles (rgb()
, etc.) may not contain spaces between parameters.
All interpolated values (chalkTemplate`${foo}`
) are converted to strings via the .toString()
method. All curly braces ({
and }
) in interpolated value strings are escaped.
This function can be useful if you need to wrap the template function. However, prefer the default export whenever possible.
Note: It's up to you to properly escape the input.
import {template} from 'chalk-template';
console.log(template('Today is {red hot}'));
import {templateStderr} from 'chalk-template';
console.error(templateStderr('Today is {red hot}'));
The makeTemplate
and makeTaggedTemplate
functions are exported so functions can be created using a custom Chalk instance.
Note: When using a function created with makeTemplate
, it's up to you to properly escape the input.
import {Chalk} from 'chalk'
import {makeTemplate, makeTaggedTemplate} from 'chalk-template';
const template = makeTemplate(new Chalk({level: 3}));
const chalkTemplate = makeTaggedTemplate(new Chalk({level: 3}));
console.log(template('Today is {red hot}'));
console.log(chalkTemplate`Today is {red hot}`);
FAQs
Terminal string styling with tagged template literals
The npm package chalk-template receives a total of 1,455,797 weekly downloads. As such, chalk-template popularity was classified as popular.
We found that chalk-template demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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