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221204 류윤주 최초 커밋
2022-12-04
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Yoonju Ryu 2022-12-04 e503a68 221204 류윤주 최초 커밋 UNIX
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@jridgewell/set-array#

Like a Set, but provides the index of the key in the backing array

This is designed to allow synchronizing a second array with the contents of the backing array, like
how in a sourcemap sourcesContent[i] is the source content associated with source[i], and there
are never duplicates.

Installation#

npm install @jridgewell/set-array

Usage#

import { SetArray, get, put, pop } from '@jridgewell/set-array';

const sa = new SetArray();

let index = put(sa, 'first');
assert.strictEqual(index, 0);

index = put(sa, 'second');
assert.strictEqual(index, 1);

assert.deepEqual(sa.array, [ 'first', 'second' ]);

index = get(sa, 'first');
assert.strictEqual(index, 0);

pop(sa);
index = get(sa, 'second');
assert.strictEqual(index, undefined);
assert.deepEqual(sa.array, [ 'first' ]);