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feat: import option doesn't affect on composes (#822)
BREAKING CHANGE: `import` option only affect on `@import` at-rules and doesn't affect on `composes` declarations
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evilebottnawi committed Nov 29, 2018
1 parent 3b573a9 commit f9aa73c
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Showing 7 changed files with 137 additions and 29 deletions.
12 changes: 4 additions & 8 deletions README.md
Expand Up @@ -116,20 +116,16 @@ url(~module/image.png) => require('module/image.png')

### `import`

To import styles from a node module path, prefix it with a `~`:
To disable `@import` resolving by `css-loader` set the option to `false`.

```css
@import '~module/styles.css';
```
Absolute urls are not resolving.

To disable `@import` resolving by `css-loader` set the option to `false`
To import styles from a node module path, prefix it with a `~`:

```css
@import url('https://fonts.googleapis.com/css?family=Roboto');
@import '~module/styles.css';
```

> _⚠️ Use with caution, since this disables resolving for **all** `@import`s, including css modules `composes: xxx from 'path/to/file.css'` feature._
### [`modules`](https://github.com/css-modules/css-modules)

The query parameter `modules` enables the **CSS Modules** spec.
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15 changes: 10 additions & 5 deletions lib/loader.js
Expand Up @@ -60,16 +60,21 @@ module.exports = function loader(content, map) {
return true;
})
.map((imp) => {
if (!loaderUtils.isUrlRequest(imp.url)) {
const { url } = imp;
const media = imp.media || '';

if (!loaderUtils.isUrlRequest(url)) {
return `exports.push([module.id, ${JSON.stringify(
`@import url(${imp.url});`
)}, ${JSON.stringify(imp.media)}]);`;
`@import url(${url});`
)}, ${JSON.stringify(media)}]);`;
}
const importUrl = importUrlPrefix + imp.url;

const importUrl = importUrlPrefix + url;

return `exports.i(require(${loaderUtils.stringifyRequest(
this,
importUrl
)}), ${JSON.stringify(imp.media)});`;
)}), ${JSON.stringify(media)});`;
}, this)
.join('\n');

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29 changes: 13 additions & 16 deletions lib/plugins/postcss-icss-parser.js
Expand Up @@ -28,26 +28,23 @@ module.exports = postcss.plugin(
});

function replaceImportsInString(str) {
if (options.import) {
const tokens = valueParser(str);
const tokens = valueParser(str);

tokens.walk((node) => {
if (node.type !== 'word') {
return;
}
tokens.walk((node) => {
if (node.type !== 'word') {
return;
}

const token = node.value;
const importIndex = imports[`$${token}`];
const token = node.value;
const importIndex = imports[`$${token}`];

if (typeof importIndex === 'number') {
// eslint-disable-next-line no-param-reassign
node.value = `___CSS_LOADER_IMPORT___${importIndex}___`;
}
});
if (typeof importIndex === 'number') {
// eslint-disable-next-line no-param-reassign
node.value = `___CSS_LOADER_IMPORT___${importIndex}___`;
}
});

return tokens.toString();
}
return str;
return tokens.toString();
}

// Replace tokens in declarations
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79 changes: 79 additions & 0 deletions test/__snapshots__/import-option.test.js.snap
@@ -1,5 +1,84 @@
// Jest Snapshot v1, https://goo.gl/fbAQLP

exports[`import option false and modules false: errors 1`] = `Array []`;

exports[`import option false and modules false: module (evaluated) 1`] = `
Array [
Array [
2,
"
",
"",
],
Array [
1,
"@import url(test-other.css) (min-width: 100px);
.ghi {
color: red;
}
",
"",
],
]
`;

exports[`import option false and modules false: module 1`] = `
"exports = module.exports = require(\\"../../../lib/runtime/api.js\\")(false);
// imports
exports.i(require(\\"-!../../../index.js??ref--4-0!./values.css\\"), \\"\\");
// module
exports.push([module.id, \\"@import url(test-other.css) (min-width: 100px);\\\\n\\\\n.ghi {\\\\n color: \\" + require(\\"-!../../../index.js??ref--4-0!./values.css\\").locals[\\"def\\"] + \\";\\\\n}\\\\n\\", \\"\\"]);
// exports
exports.locals = {
\\"def\\": \\"\\" + require(\\"-!../../../index.js??ref--4-0!./values.css\\").locals[\\"def\\"] + \\"\\"
};"
`;
exports[`import option false and modules false: warnings 1`] = `Array []`;
exports[`import option false and modules true: errors 1`] = `Array []`;
exports[`import option false and modules true: module (evaluated) 1`] = `
Array [
Array [
2,
"
",
"",
],
Array [
1,
"@import url(test-other.css) (min-width: 100px);
._3r49KZIIAltPknAjdNVZ-7 {
color: red;
}
",
"",
],
]
`;
exports[`import option false and modules true: module 1`] = `
"exports = module.exports = require(\\"../../../lib/runtime/api.js\\")(false);
// imports
exports.i(require(\\"-!../../../index.js??ref--4-0!./values.css\\"), \\"\\");
// module
exports.push([module.id, \\"@import url(test-other.css) (min-width: 100px);\\\\n\\\\n._3r49KZIIAltPknAjdNVZ-7 {\\\\n color: \\" + require(\\"-!../../../index.js??ref--4-0!./values.css\\").locals[\\"def\\"] + \\";\\\\n}\\\\n\\", \\"\\"]);
// exports
exports.locals = {
\\"def\\": \\"\\" + require(\\"-!../../../index.js??ref--4-0!./values.css\\").locals[\\"def\\"] + \\"\\",
\\"ghi\\": \\"_3r49KZIIAltPknAjdNVZ-7\\"
};"
`;
exports[`import option false and modules true: warnings 1`] = `Array []`;
exports[`import option false: errors 1`] = `Array []`;
exports[`import option false: module (evaluated) 1`] = `
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7 changes: 7 additions & 0 deletions test/fixtures/import/css-modules.css
@@ -0,0 +1,7 @@
@import url(test-other.css) (min-width: 100px);

@value def from './values.css';

.ghi {
color: def;
}
1 change: 1 addition & 0 deletions test/fixtures/import/values.css
@@ -0,0 +1 @@
@value def: red;
23 changes: 23 additions & 0 deletions test/import-option.test.js
Expand Up @@ -31,4 +31,27 @@ describe('import option', () => {
expect(stats.compilation.warnings).toMatchSnapshot('warnings');
expect(stats.compilation.errors).toMatchSnapshot('errors');
});

[true, false].forEach((modulesValue) => {
it(`false and modules ${modulesValue}`, async () => {
const config = {
loader: { options: { import: false, modules: modulesValue } },
};
const testId = './import/css-modules.css';
const stats = await webpack(testId, config);
const { modules } = stats.toJson();
const module = modules.find((m) => m.id === testId);

expect(module.source).toMatchSnapshot('module');
expect(evaluated(module.source, modules)).toMatchSnapshot(
'module (evaluated)'
);
expect(normalizeErrors(stats.compilation.warnings)).toMatchSnapshot(
'warnings'
);
expect(normalizeErrors(stats.compilation.errors)).toMatchSnapshot(
'errors'
);
});
});
});

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