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getStaticDependencies.ts
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getStaticDependencies.ts
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import Chunk from '../Chunk';
import ExternalModule from '../ExternalModule';
import Module from '../Module';
export function getStaticDependencies(
chunk: Chunk,
orderedModules: readonly Module[],
chunkByModule: ReadonlyMap<Module, Chunk>
): Set<Chunk | ExternalModule> {
const staticDependencyBlocks: (Chunk | ExternalModule)[][] = [];
const handledDependencies = new Set<Module>();
for (let modulePos = orderedModules.length - 1; modulePos >= 0; modulePos--) {
const module = orderedModules[modulePos];
if (!handledDependencies.has(module)) {
const staticDependencies: (Chunk | ExternalModule)[] = [];
addStaticDependencies(module, staticDependencies, handledDependencies, chunk, chunkByModule);
staticDependencyBlocks.unshift(staticDependencies);
}
}
const dependencies = new Set<Chunk | ExternalModule>();
for (const block of staticDependencyBlocks) {
for (const dependency of block) {
dependencies.add(dependency);
}
}
return dependencies;
}
function addStaticDependencies(
module: Module,
staticDependencies: (Chunk | ExternalModule)[],
handledModules: Set<Module>,
chunk: Chunk,
chunkByModule: ReadonlyMap<Module, Chunk>
): void {
const dependencies = module.getDependenciesToBeIncluded();
for (const dependency of dependencies) {
if (dependency instanceof ExternalModule) {
staticDependencies.push(dependency);
continue;
}
const dependencyChunk = chunkByModule.get(dependency)!;
if (dependencyChunk !== chunk) {
staticDependencies.push(dependencyChunk);
continue;
}
if (!handledModules.has(dependency)) {
handledModules.add(dependency);
addStaticDependencies(dependency, staticDependencies, handledModules, chunk, chunkByModule);
}
}
}