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minify.js
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minify.js
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import {readFile} from 'node:fs/promises';
import {fileURLToPath} from 'node:url';
import {dirname} from 'node:path';
import tryToCatch from 'try-to-catch';
import test from 'supertape';
import CleanCSS from 'clean-css';
import {minify as terserMinify} from 'terser';
import {minify as putoutMinify} from '@putout/minify';
import htmlMinifier from 'html-minifier-terser';
import {minify} from '../lib/minify.js';
const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);
test('minify: js', async (t) => {
const js = 'function hello(world) {\nconsole.log(world);\n}';
const minifyOutput = await minify.js(js);
const code = await putoutMinify(js);
t.equal(code, minifyOutput, 'js output should be equal');
t.end();
});
test('minify: js: terser', async (t) => {
const js = 'hello(`x`); function hello(world) {\nconsole.log(world);\n}';
const {code} = await terserMinify(js);
const result = await minify.js(js, {
js: {
type: 'terser',
},
});
t.equal(code, result);
t.end();
});
test('minify: auto', async (t) => {
const js = 'function hello(world) {\nconsole.log(world);\n}';
const result = await minify.auto(js, {
js: {
removeUnusedVariables: false,
},
});
const expected = await putoutMinify(js, {
removeUnusedVariables: false,
});
t.equal(result, expected);
t.end();
});
test('minify: js: with alternate options', async (t) => {
const js = 'const a = 5, b = 6; console.log(a);';
const expected = 'const a=5,b=6;';
const options = {
js: {
removeConsole: true,
removeUnusedVariables: false,
},
};
const minifyOutput = await minify.js(js, options);
t.equal(minifyOutput, expected, 'js output should be equal');
t.end();
});
test('minify: auto: not found', async (t) => {
const js = 'hello world';
const result = await minify.auto(js, {
js: {
removeUnusedVariables: false,
},
});
t.notOk(result);
t.end();
});
test('minify: html', async (t) => {
const html = '<html>\n<body>\nhello world\n</body></html>';
const options = {
removeComments: true,
removeCommentsFromCDATA: true,
removeCDATASectionsFromCDATA: true,
collapseWhitespace: true,
collapseBooleanAttributes: true,
removeAttributeQuotes: true,
removeRedundantAttributes: true,
useShortDoctype: true,
removeEmptyAttributes: true,
/* оставляем, поскольку у нас
* в элемент fm генерируеться
* таблица файлов
*/
removeEmptyElements: false,
removeOptionalTags: true,
removeScriptTypeAttributes: true,
removeStyleLinkTypeAttributes: true,
minifyJS: true,
minifyCSS: true,
};
const minifyOutput = await minify.html(html);
const htmlMinifierOutput = await htmlMinifier.minify(html, options);
t.equal(minifyOutput, htmlMinifierOutput, 'html output should be equal');
t.end();
});
test('minify: html: with alternate options', async (t) => {
const html = '<html>\n<body>\nhello world\n</body></html>';
const options = {
html: {
removeOptionalTags: false,
},
};
const minifyOutput = await minify.html(html, options);
const htmlMinifierOutput = await htmlMinifier.minify(minifyOutput, options.html);
t.equal(minifyOutput, htmlMinifierOutput, 'html output should be equal');
t.end();
});
test('minify: html: with alternate options: influence', async (t) => {
const html = '<html>\n<body>\nhello world\n</body></html>';
const options = {
html: {
removeOptionalTags: false,
},
};
const minifyOutputWithoutOptions = await minify.html(html);
const minifyOutput = await minify.html(html, options);
t.notDeepEqual(minifyOutput, minifyOutputWithoutOptions, 'options should influence output');
t.end();
});
test('minify: css', async (t) => {
const css = 'color: #FFFFFF';
const minifyOutput = await minify.css(css);
const {styles} = new CleanCSS().minify(css);
t.equal(minifyOutput, styles, 'css output should be equal');
t.end();
});
test('minify: css: with alternate options', async (t) => {
const css = `.gradient { -ms-filter: 'progid:DXImageTransform.Microsoft.Gradient(startColorStr="#ffffff", endColorStr="#000000", GradientType=1)'; background-image: linear-gradient(to right, #ffffff 0%, #000000 100%); }`;
const options = {
css: {
compatibility: {
properties: {
ieFilters: true,
},
},
},
};
const minifyOutput = await minify.css(css, options);
const {styles} = new CleanCSS(options.css).minify(css);
t.equal(minifyOutput, styles, 'css output should be equal');
t.end();
});
test('minify: css: with alternate options: influence', async (t) => {
const css = `.gradient { -ms-filter: 'progid:DXImageTransform.Microsoft.Gradient(startColorStr="#ffffff", endColorStr="#000000", GradientType=1)'; background-image: linear-gradient(to right, #ffffff 0%, #000000 100%); }`;
const options = {
css: {
compatibility: {
properties: {
ieFilters: true,
},
},
},
};
const minifyOutputWithoutOptions = await minify.css(css);
const minifyOutput = await minify.css(css, options);
t.notDeepEqual(minifyOutput, minifyOutputWithoutOptions, 'options should influence output');
t.end();
});
test('minify: css: base64', async (t) => {
const dir = `${__dirname}/fixture`;
const pathToCSS = `${dir}/style.css`;
const pathToMinifiedCSS = `${dir}/style.min.css`;
const outputCSS = await minify(pathToCSS);
const result = `${outputCSS}\n`;
const expected = await readFile(pathToMinifiedCSS, 'utf8');
t.equal(result, expected, 'image should be inlined');
t.end();
});
test('minify: css: base64 with alternate options', async (t) => {
const pathToCSS = `${__dirname}/fixture/style.css`;
const options = {
img: {
maxSize: 512,
},
};
const result = await minify(pathToCSS, options);
const expected = `.header{background-url:url('ok.png')}`;
t.equal(result, expected, 'image should not be inlined since options define it as too big');
t.end();
});
test('minify: css: with errors', async (t) => {
const css = '@import "missing.css";';
const [e] = await tryToCatch(minify.css, css);
t.equal(e, 'Ignoring local @import of "missing.css" as resource is missing.', 'throw when clean-css reports an error');
t.end();
});
test('minify: arguments: no', async (t) => {
const [e] = await tryToCatch(minify);
t.equal(e.message, 'name could not be empty!', 'throw when name empty');
t.end();
});
test('minify: unsupported file extension', async (t) => {
const pathToFile = `${__dirname}/fixture/unsupported.md`;
const [e] = await tryToCatch(minify, pathToFile);
t.equal(e?.message, 'File type "md" not supported.', 'throw when file extension is unsupported');
t.end();
});