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fix(core): do not retain dynamically compiled components and modules (#42003)

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The JIT compiler has a mapping from component to the owning NgModule
and tracks whether a certain NgModule class has been verified; these
maps causes any JIT compiled component and NgModule to be retained even
if they are no longer referenced from anywhere else. This commit
switches the maps to `WeakMap` to allow garbage collecting any
components and NgModules that are no longer referenced elsewhere.

Fixes #19997

PR Close #42003
This commit is contained in:
JoostK 2021-05-08 17:04:39 +02:00 committed by Alex Rickabaugh
parent bd2e66cf2b
commit 5bb7c0ef3a
1 changed files with 4 additions and 4 deletions
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8
packages/core/src/render3/jit/module.ts
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@ -375,12 +375,12 @@ function getAnnotation<T>(type: any, name: string): T|null {
* NgModule the component belongs to. We keep the list of compiled components here so that the
* TestBed can reset it later.
*/
let ownerNgModule = new Map<Type<any>, NgModuleType<any>>();
let verifiedNgModule = new Map<NgModuleType<any>, boolean>();
let ownerNgModule = new WeakMap<Type<any>, NgModuleType<any>>();
let verifiedNgModule = new WeakMap<NgModuleType<any>, boolean>();
export function resetCompiledComponents(): void {
ownerNgModule = new Map<Type<any>, NgModuleType<any>>();
verifiedNgModule = new Map<NgModuleType<any>, boolean>();
ownerNgModule = new WeakMap<Type<any>, NgModuleType<any>>();
verifiedNgModule = new WeakMap<NgModuleType<any>, boolean>();
moduleQueue.length = 0;
}