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Showing content from https://github.com/coderaiser/minify below:

coderaiser/minify: Minifier of js, css, html and img

Minify - a minifier of js, css, html and img files.

To get things done Minify uses this amazing tools:

• ✅ @putout/minify;
• ✅ html-minifier;
• ✅ clean-css;
• ✅ lightningcss;
• ✅ css-base64-images;

For Node users:

For Deno users:

import {minify} from 'npm:minify';

Usage: minify [options]
Options:
  -h, --help                  display this help and exit
  -v, --version               display version and exit
  --js                        minify javascript
  --css                       minify css
  --html                      minify html
  --auto                      auto detect format

The bash command below creates a code snippet saved as hello.js.

Simply copy + paste the code starting with cat, including the EOT on the last line, and press .

$ cat << EOT > hello.js
const hello = 'world';

for (let i = 0; i < hello.length; i++) {
    console.log(hello[i]);
}
EOT

Use the command minify followed by the path to and name of the js file intended to be minified. This will minify the code and output it to the screen.

$ minify hello.js
var a='world';for(let i=0;i<a.length;i++)console.log(a[i]);

You can capture the output with the following:

$ minify hello.js > hello.min.js

You can pass input using cat:

cat << EOT | bin/minify.js --js
> const hello = 'world';
>
> for (let i = 0; i < hello.length; i++) {
>     console.log(hello[i]);
> }
> EOT
var a='world';for(let i=0;i<a.length;i++)console.log(a[i]);

Minify can be used with async-await and try-to-catch:

import {minify} from 'minify';
import tryToCatch from 'try-to-catch';

const options = {
    html: {
        removeAttributeQuotes: false,
        removeOptionalTags: false,
    },
};

const [error, data] = await tryToCatch(minify, './client.js', options);

if (error)
    return console.error(error.message);

console.log(data);

For cli use these options can be provided in a JSON file named .minify.json like so:

{
    "js": {
        "type": "putout",
        "putout": {
            "quote": "'",
            "mangle": true,
            "mangleClassNames": true,
            "removeUnusedVariables": true,
            "removeConsole": false,
            "removeUselessSpread": true
        }
    },
    "img": {
        "maxSize": 4096
    },
    "html": {
        "removeComments": true,
        "removeCommentsFromCDATA": true,
        "removeCDATASectionsFromCDATA": true,
        "collapseWhitespace": true,
        "collapseBooleanAttributes": true,
        "removeAttributeQuotes": true,
        "removeRedundantAttributes": true,
        "useShortDoctype": true,
        "removeEmptyAttributes": true,
        "removeEmptyElements": false,
        "removeOptionalTags": true,
        "removeScriptTypeAttributes": true,
        "removeStyleLinkTypeAttributes": true,
        "minifyJS": true,
        "minifyCSS": true
    },
    "css": {
        "type": "clean-css",
        "clean-css": {
            "compatibility": "*"
        }
    }
}

Minify walking up parent directories to locate and read it’s configuration file .minify.json.

In section related to js you can choose type of minifier:

• putout; (default);
• terser;
• esbuild;
• swc;

When you want to pass options to terser, use section with the same name, .minify.json will look this way:

{
    "js": {
        "type": "terser",
        "terser": {
            "mangle": false
        }
    }
}

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