Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 | import type {
Compiler,
ExternalItem,
ExternalItemFunctionData
} from '@rspack/core';
import type { ParsedModuleLinkPluginOptions } from './types';
export function initExternal(
compiler: Compiler,
opts: ParsedModuleLinkPluginOptions
) {
const externals: ExternalItem[] = [];
if (Array.isArray(compiler.options.externals)) {
externals.push(...compiler.options.externals);
} else if (compiler.options.externals) {
externals.push(compiler.options.externals);
}
const defaultContext = compiler.options.context ?? process.cwd();
const importMap = new Map<string, string>();
externals.push(async (data: ExternalItemFunctionData) => {
if (!data.request || !data.context || !data.contextInfo?.issuer) return;
if (importMap.size === 0) {
await Promise.all(
Object.values(opts.exports).map(async (value) => {
const identifier = value.rewrite
? value.identifier
: value.name;
importMap.set(identifier, identifier);
const entry = await resolvePath(
data,
defaultContext,
value.file
);
if (entry) {
importMap.set(entry, identifier);
}
})
);
for (const key of Object.keys(opts.imports)) {
importMap.set(key, key);
}
}
// 1、先按照标识符查找
let importName = importMap.get(data.request);
if (!importName) {
// 2、再按照路径查找
const result = await resolvePath(data, data.context, data.request);
if (result) {
importName = importMap.get(result);
}
}
if (importName) {
return `module-import ${importName}`;
}
});
compiler.options.externals = externals;
}
async function resolvePath(
data: ExternalItemFunctionData,
context: string,
request: string
): Promise<string | null> {
return new Promise((resolve) => {
if (data.getResolve) {
data.getResolve()(context, request, (err, res) => {
resolve(res ? res : null);
});
} else {
resolve(null);
}
});
}
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