17 lines
595 B
TypeScript
17 lines
595 B
TypeScript
// Copyright 2019-2020 Signal Messenger, LLC
|
|
// SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
export function makeLookup<T>(
|
|
items: Array<T>,
|
|
key: keyof T
|
|
): Record<string, T> {
|
|
return (items || []).reduce((lookup, item) => {
|
|
if (item !== undefined && item[key] !== undefined) {
|
|
// The force cast is necessary if we want the keyof T above, and the flexibility
|
|
// to pass anything in. And of course we're modifying a parameter!
|
|
// eslint-disable-next-line no-param-reassign
|
|
lookup[String(item[key])] = item;
|
|
}
|
|
return lookup;
|
|
}, {} as Record<string, T>);
|
|
}
|