You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
1.6 KiB
57 lines
1.6 KiB
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
"use strict";
|
|
|
|
const { ConcatSource, RawSource } = require("webpack-sources");
|
|
|
|
const stringifySafe = data => {
|
|
const stringified = JSON.stringify(data);
|
|
if (!stringified) {
|
|
return undefined; // Invalid JSON
|
|
}
|
|
|
|
return stringified.replace(/\u2028|\u2029/g, str =>
|
|
str === "\u2029" ? "\\u2029" : "\\u2028"
|
|
); // invalid in JavaScript but valid JSON
|
|
};
|
|
|
|
class JsonGenerator {
|
|
generate(module, dependencyTemplates, runtimeTemplate) {
|
|
const source = new ConcatSource();
|
|
const data = module.buildInfo.jsonData;
|
|
if (data === undefined) {
|
|
return new RawSource(
|
|
runtimeTemplate.missingModuleStatement({
|
|
request: module.rawRequest
|
|
})
|
|
);
|
|
}
|
|
let finalJson;
|
|
if (
|
|
Array.isArray(module.buildMeta.providedExports) &&
|
|
!module.isUsed("default")
|
|
) {
|
|
// Only some exports are used: We can optimize here, by only generating a part of the JSON
|
|
const reducedJson = {};
|
|
for (const exportName of module.buildMeta.providedExports) {
|
|
if (exportName === "default") continue;
|
|
const used = module.isUsed(exportName);
|
|
if (used) {
|
|
reducedJson[used] = data[exportName];
|
|
}
|
|
}
|
|
finalJson = reducedJson;
|
|
} else {
|
|
finalJson = data;
|
|
}
|
|
// Use JSON because JSON.parse() is much faster than JavaScript evaluation
|
|
const jsonSource = JSON.stringify(stringifySafe(finalJson));
|
|
const jsonExpr = `JSON.parse(${jsonSource})`;
|
|
source.add(`${module.moduleArgument}.exports = ${jsonExpr};`);
|
|
return source;
|
|
}
|
|
}
|
|
|
|
module.exports = JsonGenerator;
|