@inversifyjs/core/lib/metadata/actions/setIsInjectableFlag.js

InversifyJs core package

import { getOwnReflectMetadata, setReflectMetadata, } from '@inversifyjs/reflect-metadata-utils';
import { InversifyCoreError } from '../../error/models/InversifyCoreError.js';
import { InversifyCoreErrorKind } from '../../error/models/InversifyCoreErrorKind.js';
import { classIsInjectableFlagReflectKey } from '../../reflectMetadata/data/classIsInjectableFlagReflectKey.js';
// eslint-disable-next-line @typescript-eslint/no-unsafe-function-type
export function setIsInjectableFlag(target) {
    const isInjectableFlag = getOwnReflectMetadata(target, classIsInjectableFlagReflectKey);
    if (isInjectableFlag !== undefined) {
        throw new InversifyCoreError(InversifyCoreErrorKind.injectionDecoratorConflict, `Cannot apply @injectable decorator multiple times at class "${target.name}"`);
    }
    setReflectMetadata(target, classIsInjectableFlagReflectKey, true);
}
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