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utils.js
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import path from "path";
import isEqualLocals from "./runtime/isEqualLocals";
const matchRelativePath = /^\.\.?[/\\]/;
function isAbsolutePath(str) {
return path.posix.isAbsolute(str) || path.win32.isAbsolute(str);
}
function isRelativePath(str) {
return matchRelativePath.test(str);
}
// TODO simplify for the next major release
function stringifyRequest(loaderContext, request) {
if (
typeof loaderContext.utils !== "undefined" &&
typeof loaderContext.utils.contextify === "function"
) {
return JSON.stringify(
loaderContext.utils.contextify(loaderContext.context, request)
);
}
const splitted = request.split("!");
const { context } = loaderContext;
return JSON.stringify(
splitted
.map((part) => {
// First, separate singlePath from query, because the query might contain paths again
const splittedPart = part.match(/^(.*?)(\?.*)/);
const query = splittedPart ? splittedPart[2] : "";
let singlePath = splittedPart ? splittedPart[1] : part;
if (isAbsolutePath(singlePath) && context) {
singlePath = path.relative(context, singlePath);
if (isAbsolutePath(singlePath)) {
// If singlePath still matches an absolute path, singlePath was on a different drive than context.
// In this case, we leave the path platform-specific without replacing any separators.
// @see https://github.com/webpack/loader-utils/pull/14
return singlePath + query;
}
if (isRelativePath(singlePath) === false) {
// Ensure that the relative path starts at least with ./ otherwise it would be a request into the modules directory (like node_modules).
singlePath = `./${singlePath}`;
}
}
return singlePath.replace(/\\/g, "/") + query;
})
.join("!")
);
}
function getImportLinkAPICode(esModule, loaderContext) {
const modulePath = stringifyRequest(
loaderContext,
`!${path.join(__dirname, "runtime/injectStylesIntoLinkTag.js")}`
);
return esModule
? `import API from ${modulePath};`
: `var API = require(${modulePath});`;
}
function getImportLinkContentCode(esModule, loaderContext, request) {
const modulePath = stringifyRequest(loaderContext, `!!${request}`);
return esModule
? `import content from ${modulePath};`
: `var content = require(${modulePath});`;
}
function getImportStyleAPICode(esModule, loaderContext) {
const modulePath = stringifyRequest(
loaderContext,
`!${path.join(__dirname, "runtime/injectStylesIntoStyleTag.js")}`
);
return esModule
? `import API from ${modulePath};`
: `var API = require(${modulePath});`;
}
function getImportStyleDomAPICode(
esModule,
loaderContext,
isSingleton,
isAuto
) {
const styleAPI = stringifyRequest(
loaderContext,
`!${path.join(__dirname, "runtime/styleDomAPI.js")}`
);
const singletonAPI = stringifyRequest(
loaderContext,
`!${path.join(__dirname, "runtime/singletonStyleDomAPI.js")}`
);
if (isAuto) {
return esModule
? `import domAPI from ${styleAPI};
import domAPISingleton from ${singletonAPI};`
: `var domAPI = require(${styleAPI});
var domAPISingleton = require(${singletonAPI});`;
}
return esModule
? `import domAPI from ${isSingleton ? singletonAPI : styleAPI};`
: `var domAPI = require(${isSingleton ? singletonAPI : styleAPI});`;
}
function getImportStyleContentCode(esModule, loaderContext, request) {
const modulePath = stringifyRequest(loaderContext, `!!${request}`);
return esModule
? `import content, * as namedExport from ${modulePath};`
: `var content = require(${modulePath});`;
}
function getImportInsertBySelectorCode(
esModule,
loaderContext,
insertType,
options
) {
if (insertType === "selector") {
const modulePath = stringifyRequest(
loaderContext,
`!${path.join(__dirname, "runtime/insertBySelector.js")}`
);
return esModule
? `import insertFn from ${modulePath};`
: `var insertFn = require(${modulePath});`;
}
if (insertType === "module-path") {
const modulePath = stringifyRequest(loaderContext, `${options.insert}`);
loaderContext.addBuildDependency(options.insert);
return esModule
? `import insertFn from ${modulePath};`
: `var insertFn = require(${modulePath});`;
}
return "";
}
function getInsertOptionCode(insertType, options) {
if (insertType === "selector") {
const insert = options.insert ? JSON.stringify(options.insert) : '"head"';
return `
options.insert = insertFn.bind(null, ${insert});
`;
}
if (insertType === "module-path") {
return `options.insert = insertFn;`;
}
// Todo remove "function" type for insert option in next major release, because code duplication occurs. Leave require.resolve()
return `options.insert = ${options.insert.toString()};`;
}
function getImportInsertStyleElementCode(esModule, loaderContext) {
const modulePath = stringifyRequest(
loaderContext,
`!${path.join(__dirname, "runtime/insertStyleElement.js")}`
);
return esModule
? `import insertStyleElement from ${modulePath};`
: `var insertStyleElement = require(${modulePath});`;
}
function getStyleHmrCode(esModule, loaderContext, request, lazy) {
const modulePath = stringifyRequest(loaderContext, `!!${request}`);
return `
if (module.hot) {
if (!content.locals || module.hot.invalidate) {
var isEqualLocals = ${isEqualLocals.toString()};
var isNamedExport = ${esModule ? "!content.locals" : false};
var oldLocals = isNamedExport ? namedExport : content.locals;
module.hot.accept(
${modulePath},
function () {
${
esModule
? `if (!isEqualLocals(oldLocals, isNamedExport ? namedExport : content.locals, isNamedExport)) {
module.hot.invalidate();
return;
}
oldLocals = isNamedExport ? namedExport : content.locals;
${
lazy
? `if (update && refs > 0) {
update(content);
}`
: `update(content);`
}`
: `content = require(${modulePath});
content = content.__esModule ? content.default : content;
${
lazy
? ""
: `if (typeof content === 'string') {
content = [[module.id, content, '']];
}`
}
if (!isEqualLocals(oldLocals, content.locals)) {
module.hot.invalidate();
return;
}
oldLocals = content.locals;
${
lazy
? `if (update && refs > 0) {
update(content);
}`
: `update(content);`
}`
}
}
)
}
module.hot.dispose(function() {
${
lazy
? `if (update) {
update();
}`
: `update();`
}
});
}
`;
}
function getLinkHmrCode(esModule, loaderContext, request) {
const modulePath = stringifyRequest(loaderContext, `!!${request}`);
return `
if (module.hot) {
module.hot.accept(
${modulePath},
function() {
${
esModule
? "update(content);"
: `content = require(${modulePath});
content = content.__esModule ? content.default : content;
update(content);`
}
}
);
module.hot.dispose(function() {
update();
});
}`;
}
function getdomAPI(isAuto) {
return isAuto ? "isOldIE() ? domAPISingleton : domAPI" : "domAPI";
}
function getImportIsOldIECode(esModule, loaderContext) {
const modulePath = stringifyRequest(
loaderContext,
`!${path.join(__dirname, "runtime/isOldIE.js")}`
);
return esModule
? `import isOldIE from ${modulePath};`
: `var isOldIE = require(${modulePath});`;
}
function getStyleTagTransformFnCode(
esModule,
loaderContext,
options,
isSingleton,
styleTagTransformType
) {
if (isSingleton) {
return "";
}
if (styleTagTransformType === "default") {
const modulePath = stringifyRequest(
loaderContext,
`!${path.join(__dirname, "runtime/styleTagTransform.js")}`
);
return esModule
? `import styleTagTransformFn from ${modulePath};`
: `var styleTagTransformFn = require(${modulePath});`;
}
if (styleTagTransformType === "module-path") {
const modulePath = stringifyRequest(
loaderContext,
`${options.styleTagTransform}`
);
loaderContext.addBuildDependency(options.styleTagTransform);
return esModule
? `import styleTagTransformFn from ${modulePath};`
: `var styleTagTransformFn = require(${modulePath});`;
}
return "";
}
function getStyleTagTransformFn(options, isSingleton) {
// Todo remove "function" type for styleTagTransform option in next major release, because code duplication occurs. Leave require.resolve()
return isSingleton
? ""
: typeof options.styleTagTransform === "function"
? `options.styleTagTransform = ${options.styleTagTransform.toString()}`
: `options.styleTagTransform = styleTagTransformFn`;
}
function getExportStyleCode(esModule, loaderContext, request) {
const modulePath = stringifyRequest(loaderContext, `!!${request}`);
return esModule
? `export * from ${modulePath};
export default content && content.locals ? content.locals : undefined;`
: "module.exports = content && content.locals || {};";
}
function getExportLazyStyleCode(esModule, loaderContext, request) {
const modulePath = stringifyRequest(loaderContext, `!!${request}`);
return esModule
? `export * from ${modulePath};
export default exported;`
: "module.exports = exported;";
}
function getSetAttributesCode(esModule, loaderContext, options) {
let modulePath;
if (typeof options.attributes !== "undefined") {
modulePath =
options.attributes.nonce !== "undefined"
? stringifyRequest(
loaderContext,
`!${path.join(
__dirname,
"runtime/setAttributesWithAttributesAndNonce.js"
)}`
)
: stringifyRequest(
loaderContext,
`!${path.join(__dirname, "runtime/setAttributesWithAttributes.js")}`
);
} else {
modulePath = stringifyRequest(
loaderContext,
`!${path.join(__dirname, "runtime/setAttributesWithoutAttributes.js")}`
);
}
return esModule
? `import setAttributes from ${modulePath};`
: `var setAttributes = require(${modulePath});`;
}
// eslint-disable-next-line import/prefer-default-export
export {
stringifyRequest,
getImportInsertStyleElementCode,
getImportInsertBySelectorCode,
getImportStyleContentCode,
getImportStyleDomAPICode,
getImportStyleAPICode,
getImportLinkContentCode,
getImportLinkAPICode,
getStyleHmrCode,
getLinkHmrCode,
getdomAPI,
getImportIsOldIECode,
getStyleTagTransformFn,
getExportStyleCode,
getExportLazyStyleCode,
getSetAttributesCode,
getInsertOptionCode,
getStyleTagTransformFnCode,
};