forked from zhurui/management
56 lines
1.4 KiB
JavaScript
56 lines
1.4 KiB
JavaScript
/*
|
|
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
|
|
})
|
|
);
|
|
}
|
|
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];
|
|
}
|
|
}
|
|
source.add(
|
|
`${module.moduleArgument}.exports = ${stringifySafe(reducedJson)};`
|
|
);
|
|
} else {
|
|
source.add(`${module.moduleArgument}.exports = ${stringifySafe(data)};`);
|
|
}
|
|
return source;
|
|
}
|
|
}
|
|
|
|
module.exports = JsonGenerator;
|