next
Version:
The React Framework
108 lines (107 loc) • 3.9 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = loader;
var _warning = _interopRequireDefault(require("./Warning"));
var _error = _interopRequireDefault(require("./Error"));
var _utils = require("./utils");
async function loader(content, sourceMap, meta) {
const loaderSpan = this.currentTraceSpan.traceChild("postcss-loader");
const callback = this.async();
loaderSpan.traceAsyncFn(async ()=>{
const options = this.getOptions();
const file = this.resourcePath;
const useSourceMap = typeof options.sourceMap !== "undefined" ? options.sourceMap : this.sourceMap;
const processOptions = {
from: file,
to: file
};
if (useSourceMap) {
processOptions.map = {
inline: false,
annotation: false,
...processOptions.map
};
}
if (sourceMap && processOptions.map) {
processOptions.map.prev = loaderSpan.traceChild("normalize-source-map").traceFn(()=>(0, _utils).normalizeSourceMap(sourceMap, this.context));
}
let root;
// Reuse PostCSS AST from other loaders
if (meta && meta.ast && meta.ast.type === "postcss") {
({ root } = meta.ast);
loaderSpan.setAttribute("astUsed", "true");
}
// Initializes postcss with plugins
const { postcssWithPlugins } = await options.postcss();
let result;
try {
result = await loaderSpan.traceChild("postcss-process").traceAsyncFn(()=>postcssWithPlugins.process(root || content, processOptions));
} catch (error) {
if (error.file) {
this.addDependency(error.file);
}
if (error.name === "CssSyntaxError") {
throw new _error.default(error);
}
throw error;
}
for (const warning of result.warnings()){
this.emitWarning(new _warning.default(warning));
}
for (const message of result.messages){
// eslint-disable-next-line default-case
switch(message.type){
case "dependency":
this.addDependency(message.file);
break;
case "build-dependency":
this.addBuildDependency(message.file);
break;
case "missing-dependency":
this.addMissingDependency(message.file);
break;
case "context-dependency":
this.addContextDependency(message.file);
break;
case "dir-dependency":
this.addContextDependency(message.dir);
break;
case "asset":
if (message.content && message.file) {
this.emitFile(message.file, message.content, message.sourceMap, message.info);
}
}
}
// eslint-disable-next-line no-undefined
let map = result.map ? result.map.toJSON() : undefined;
if (map && useSourceMap) {
map = (0, _utils).normalizeSourceMapAfterPostcss(map, this.context);
}
const ast = {
type: "postcss",
version: result.processor.version,
root: result.root
};
return [
result.css,
map,
{
ast
}
];
}).then(([css, map, { ast }])=>{
callback == null ? void 0 : callback(null, css, map, {
ast
});
}, (err)=>{
callback == null ? void 0 : callback(err);
});
}
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {
default: obj
};
}
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