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fix: reduce runtime (#1378)
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alexander-akait committed Sep 16, 2021
1 parent 7c2cede commit cf3a3a7
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Showing 17 changed files with 1,011 additions and 429 deletions.
14 changes: 14 additions & 0 deletions .eslintrc.js
@@ -1,4 +1,18 @@
module.exports = {
root: true,
extends: ["@webpack-contrib/eslint-config-webpack", "prettier"],
overrides: [
{
files: "src/runtime/**/*",
env: {
browser: true,
},
rules: {
"prefer-destructuring": "off",
"no-param-reassign": "off",
"no-continue": "off",
"no-underscore-dangle": "off",
},
},
],
};
11 changes: 7 additions & 4 deletions src/index.js
Expand Up @@ -207,10 +207,13 @@ export default async function loader(content, map, meta) {
imports.unshift({
type: "api_sourcemap_import",
importName: "___CSS_LOADER_API_SOURCEMAP_IMPORT___",
url: stringifyRequest(
this,
require.resolve("./runtime/cssWithMappingToString")
),
url: stringifyRequest(this, require.resolve("./runtime/noSourceMaps")),
});
} else {
imports.unshift({
type: "api_sourcemap_import",
importName: "___CSS_LOADER_API_NO_SOURCEMAP_IMPORT___",
url: stringifyRequest(this, require.resolve("./runtime/noSourceMaps")),
});
}
}
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10 changes: 2 additions & 8 deletions src/runtime/api.js
Expand Up @@ -2,9 +2,7 @@
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
// css base code, injected by the css-loader
// eslint-disable-next-line func-names
module.exports = function (cssWithMappingToString) {
module.exports = (cssWithMappingToString) => {
const list = [];

// return the list of modules as css string
Expand All @@ -21,18 +19,15 @@ module.exports = function (cssWithMappingToString) {
};

// import a list of modules into the list
// eslint-disable-next-line func-names
list.i = function (modules, mediaQuery, dedupe) {
list.i = function i(modules, mediaQuery, dedupe) {
if (typeof modules === "string") {
// eslint-disable-next-line no-param-reassign
modules = [[null, modules, ""]];
}

const alreadyImportedModules = {};

if (dedupe) {
for (let i = 0; i < this.length; i++) {
// eslint-disable-next-line prefer-destructuring
const id = this[i][0];

if (id != null) {
Expand All @@ -45,7 +40,6 @@ module.exports = function (cssWithMappingToString) {
const item = [].concat(modules[i]);

if (dedupe && alreadyImportedModules[item[0]]) {
// eslint-disable-next-line no-continue
continue;
}

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4 changes: 0 additions & 4 deletions src/runtime/getUrl.js
@@ -1,24 +1,20 @@
module.exports = (url, options) => {
if (!options) {
// eslint-disable-next-line no-param-reassign
options = {};
}

if (!url) {
return url;
}

// eslint-disable-next-line no-underscore-dangle, no-param-reassign
url = String(url.__esModule ? url.default : url);

// If url is already wrapped in quotes, remove them
if (/^['"].*['"]$/.test(url)) {
// eslint-disable-next-line no-param-reassign
url = url.slice(1, -1);
}

if (options.hash) {
// eslint-disable-next-line no-param-reassign
url += options.hash;
}

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1 change: 1 addition & 0 deletions src/runtime/noSourceMaps.js
@@ -0,0 +1 @@
module.exports = (i) => i[1];
@@ -1,12 +1,12 @@
module.exports = function cssWithMappingToString(item) {
const [, content, , cssMapping] = item;
module.exports = (item) => {
const content = item[1];
const cssMapping = item[3];

if (!cssMapping) {
return content;
}

if (typeof btoa === "function") {
// eslint-disable-next-line no-undef
const base64 = btoa(
unescape(encodeURIComponent(JSON.stringify(cssMapping)))
);
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2 changes: 1 addition & 1 deletion src/utils.js
Expand Up @@ -935,7 +935,7 @@ function getModuleCode(result, api, replacements, options, loaderContext) {
let beforeCode = `var ___CSS_LOADER_EXPORT___ = ___CSS_LOADER_API_IMPORT___(${
options.sourceMap
? "___CSS_LOADER_API_SOURCEMAP_IMPORT___"
: "function(i){return i[1]}"
: "___CSS_LOADER_API_NO_SOURCEMAP_IMPORT___"
});\n`;

for (const item of api) {
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18 changes: 12 additions & 6 deletions test/__snapshots__/esModule-option.test.js.snap
Expand Up @@ -4,11 +4,12 @@ exports[`"esModule" option should work when not specified: errors 1`] = `Array [

exports[`"esModule" option should work when not specified: module 1`] = `
"// Imports
import ___CSS_LOADER_API_NO_SOURCEMAP_IMPORT___ from \\"../../../src/runtime/noSourceMaps.js\\";
import ___CSS_LOADER_API_IMPORT___ from \\"../../../src/runtime/api.js\\";
import ___CSS_LOADER_AT_RULE_IMPORT_0___ from \\"-!../../../src/index.js??ruleSet[1].rules[0].use[0]!./imported.css\\";
import ___CSS_LOADER_GET_URL_IMPORT___ from \\"../../../src/runtime/getUrl.js\\";
var ___CSS_LOADER_URL_IMPORT_0___ = new URL(\\"./img.png\\", import.meta.url);
var ___CSS_LOADER_EXPORT___ = ___CSS_LOADER_API_IMPORT___(function(i){return i[1]});
var ___CSS_LOADER_EXPORT___ = ___CSS_LOADER_API_IMPORT___(___CSS_LOADER_API_NO_SOURCEMAP_IMPORT___);
___CSS_LOADER_EXPORT___.i(___CSS_LOADER_AT_RULE_IMPORT_0___);
var ___CSS_LOADER_URL_REPLACEMENT_0___ = ___CSS_LOADER_GET_URL_IMPORT___(___CSS_LOADER_URL_IMPORT_0___);
// Module
Expand Down Expand Up @@ -50,11 +51,12 @@ exports[`"esModule" option should work with a value equal to "false": errors 1`]

exports[`"esModule" option should work with a value equal to "false": module 1`] = `
"// Imports
var ___CSS_LOADER_API_NO_SOURCEMAP_IMPORT___ = require(\\"../../../src/runtime/noSourceMaps.js\\");
var ___CSS_LOADER_API_IMPORT___ = require(\\"../../../src/runtime/api.js\\");
var ___CSS_LOADER_AT_RULE_IMPORT_0___ = require(\\"-!../../../src/index.js??ruleSet[1].rules[0].use[0]!./imported.css\\");
var ___CSS_LOADER_GET_URL_IMPORT___ = require(\\"../../../src/runtime/getUrl.js\\");
var ___CSS_LOADER_URL_IMPORT_0___ = require(\\"./img.png\\");
var ___CSS_LOADER_EXPORT___ = ___CSS_LOADER_API_IMPORT___(function(i){return i[1]});
var ___CSS_LOADER_EXPORT___ = ___CSS_LOADER_API_IMPORT___(___CSS_LOADER_API_NO_SOURCEMAP_IMPORT___);
___CSS_LOADER_EXPORT___.i(___CSS_LOADER_AT_RULE_IMPORT_0___);
var ___CSS_LOADER_URL_REPLACEMENT_0___ = ___CSS_LOADER_GET_URL_IMPORT___(___CSS_LOADER_URL_IMPORT_0___);
// Module
Expand Down Expand Up @@ -96,11 +98,12 @@ exports[`"esModule" option should work with a value equal to "true" and the "mod

exports[`"esModule" option should work with a value equal to "true" and the "mode" value equal to "global": module 1`] = `
"// Imports
import ___CSS_LOADER_API_NO_SOURCEMAP_IMPORT___ from \\"../../../src/runtime/noSourceMaps.js\\";
import ___CSS_LOADER_API_IMPORT___ from \\"../../../src/runtime/api.js\\";
import ___CSS_LOADER_AT_RULE_IMPORT_0___ from \\"-!../../../src/index.js??ruleSet[1].rules[0].use[0]!./imported.css\\";
import ___CSS_LOADER_GET_URL_IMPORT___ from \\"../../../src/runtime/getUrl.js\\";
var ___CSS_LOADER_URL_IMPORT_0___ = new URL(\\"./img.png\\", import.meta.url);
var ___CSS_LOADER_EXPORT___ = ___CSS_LOADER_API_IMPORT___(function(i){return i[1]});
var ___CSS_LOADER_EXPORT___ = ___CSS_LOADER_API_IMPORT___(___CSS_LOADER_API_NO_SOURCEMAP_IMPORT___);
___CSS_LOADER_EXPORT___.i(___CSS_LOADER_AT_RULE_IMPORT_0___);
var ___CSS_LOADER_URL_REPLACEMENT_0___ = ___CSS_LOADER_GET_URL_IMPORT___(___CSS_LOADER_URL_IMPORT_0___);
// Module
Expand Down Expand Up @@ -143,11 +146,12 @@ exports[`"esModule" option should work with a value equal to "true" and the "mod

exports[`"esModule" option should work with a value equal to "true" and the "mode" value equal to "local": module 1`] = `
"// Imports
import ___CSS_LOADER_API_NO_SOURCEMAP_IMPORT___ from \\"../../../src/runtime/noSourceMaps.js\\";
import ___CSS_LOADER_API_IMPORT___ from \\"../../../src/runtime/api.js\\";
import ___CSS_LOADER_AT_RULE_IMPORT_0___ from \\"-!../../../src/index.js??ruleSet[1].rules[0].use[0]!./imported.css\\";
import ___CSS_LOADER_GET_URL_IMPORT___ from \\"../../../src/runtime/getUrl.js\\";
var ___CSS_LOADER_URL_IMPORT_0___ = new URL(\\"./img.png\\", import.meta.url);
var ___CSS_LOADER_EXPORT___ = ___CSS_LOADER_API_IMPORT___(function(i){return i[1]});
var ___CSS_LOADER_EXPORT___ = ___CSS_LOADER_API_IMPORT___(___CSS_LOADER_API_NO_SOURCEMAP_IMPORT___);
___CSS_LOADER_EXPORT___.i(___CSS_LOADER_AT_RULE_IMPORT_0___);
var ___CSS_LOADER_URL_REPLACEMENT_0___ = ___CSS_LOADER_GET_URL_IMPORT___(___CSS_LOADER_URL_IMPORT_0___);
// Module
Expand Down Expand Up @@ -192,11 +196,12 @@ exports[`"esModule" option should work with a value equal to "true" and the "mod

exports[`"esModule" option should work with a value equal to "true" and the "mode" value equal to "pure": module 1`] = `
"// Imports
import ___CSS_LOADER_API_NO_SOURCEMAP_IMPORT___ from \\"../../../src/runtime/noSourceMaps.js\\";
import ___CSS_LOADER_API_IMPORT___ from \\"../../../src/runtime/api.js\\";
import ___CSS_LOADER_AT_RULE_IMPORT_0___ from \\"-!../../../src/index.js??ruleSet[1].rules[0].use[0]!./imported.css\\";
import ___CSS_LOADER_GET_URL_IMPORT___ from \\"../../../src/runtime/getUrl.js\\";
var ___CSS_LOADER_URL_IMPORT_0___ = new URL(\\"./img.png\\", import.meta.url);
var ___CSS_LOADER_EXPORT___ = ___CSS_LOADER_API_IMPORT___(function(i){return i[1]});
var ___CSS_LOADER_EXPORT___ = ___CSS_LOADER_API_IMPORT___(___CSS_LOADER_API_NO_SOURCEMAP_IMPORT___);
___CSS_LOADER_EXPORT___.i(___CSS_LOADER_AT_RULE_IMPORT_0___);
var ___CSS_LOADER_URL_REPLACEMENT_0___ = ___CSS_LOADER_GET_URL_IMPORT___(___CSS_LOADER_URL_IMPORT_0___);
// Module
Expand Down Expand Up @@ -241,11 +246,12 @@ exports[`"esModule" option should work with a value equal to "true": errors 1`]

exports[`"esModule" option should work with a value equal to "true": module 1`] = `
"// Imports
import ___CSS_LOADER_API_NO_SOURCEMAP_IMPORT___ from \\"../../../src/runtime/noSourceMaps.js\\";
import ___CSS_LOADER_API_IMPORT___ from \\"../../../src/runtime/api.js\\";
import ___CSS_LOADER_AT_RULE_IMPORT_0___ from \\"-!../../../src/index.js??ruleSet[1].rules[0].use[0]!./imported.css\\";
import ___CSS_LOADER_GET_URL_IMPORT___ from \\"../../../src/runtime/getUrl.js\\";
var ___CSS_LOADER_URL_IMPORT_0___ = new URL(\\"./img.png\\", import.meta.url);
var ___CSS_LOADER_EXPORT___ = ___CSS_LOADER_API_IMPORT___(function(i){return i[1]});
var ___CSS_LOADER_EXPORT___ = ___CSS_LOADER_API_IMPORT___(___CSS_LOADER_API_NO_SOURCEMAP_IMPORT___);
___CSS_LOADER_EXPORT___.i(___CSS_LOADER_AT_RULE_IMPORT_0___);
var ___CSS_LOADER_URL_REPLACEMENT_0___ = ___CSS_LOADER_GET_URL_IMPORT___(___CSS_LOADER_URL_IMPORT_0___);
// Module
Expand Down

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