| 1 | 'use strict';
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| 2 |
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| 3 | var callBind = require('../');
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| 4 | var hasStrictMode = require('has-strict-mode')();
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| 5 | var forEach = require('for-each');
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| 6 | var inspect = require('object-inspect');
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| 7 | var v = require('es-value-fixtures');
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| 8 |
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| 9 | var test = require('tape');
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| 10 |
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| 11 | test('callBindBasic', function (t) {
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| 12 | forEach(v.nonFunctions, function (nonFunction) {
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| 13 | t['throws'](
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| 14 | // @ts-expect-error
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| 15 | function () { callBind([nonFunction]); },
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| 16 | TypeError,
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| 17 | inspect(nonFunction) + ' is not a function'
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| 18 | );
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| 19 | });
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| 20 |
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| 21 | var sentinel = { sentinel: true };
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| 22 | /** @type {<T>(this: T, a: number, b: number) => [T | undefined, number, number]} */
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| 23 | var func = function (a, b) {
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| 24 | // eslint-disable-next-line no-invalid-this
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| 25 | return [!hasStrictMode && this === global ? undefined : this, a, b];
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| 26 | };
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| 27 | t.equal(func.length, 2, 'original function length is 2');
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| 28 |
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| 29 | /** type {(thisArg: unknown, a: number, b: number) => [unknown, number, number]} */
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| 30 | var bound = callBind([func]);
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| 31 | /** type {((a: number, b: number) => [sentinel, typeof a, typeof b])} */
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| 32 | var boundR = callBind([func, sentinel]);
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| 33 | /** type {((b: number) => [sentinel, number, typeof b])} */
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| 34 | var boundArg = callBind([func, sentinel, 1]);
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| 35 |
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| 36 | // @ts-expect-error
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| 37 | t.deepEqual(bound(), [undefined, undefined, undefined], 'bound func with no args');
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| 38 |
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| 39 | // @ts-expect-error
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| 40 | t.deepEqual(func(), [undefined, undefined, undefined], 'unbound func with too few args');
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| 41 | // @ts-expect-error
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| 42 | t.deepEqual(bound(1, 2), [hasStrictMode ? 1 : Object(1), 2, undefined], 'bound func too few args');
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| 43 | // @ts-expect-error
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| 44 | t.deepEqual(boundR(), [sentinel, undefined, undefined], 'bound func with receiver, with too few args');
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| 45 | // @ts-expect-error
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| 46 | t.deepEqual(boundArg(), [sentinel, 1, undefined], 'bound func with receiver and arg, with too few args');
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| 47 |
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| 48 | t.deepEqual(func(1, 2), [undefined, 1, 2], 'unbound func with right args');
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| 49 | t.deepEqual(bound(1, 2, 3), [hasStrictMode ? 1 : Object(1), 2, 3], 'bound func with right args');
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| 50 | t.deepEqual(boundR(1, 2), [sentinel, 1, 2], 'bound func with receiver, with right args');
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| 51 | t.deepEqual(boundArg(2), [sentinel, 1, 2], 'bound func with receiver and arg, with right arg');
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| 52 |
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| 53 | // @ts-expect-error
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| 54 | t.deepEqual(func(1, 2, 3), [undefined, 1, 2], 'unbound func with too many args');
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| 55 | // @ts-expect-error
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| 56 | t.deepEqual(bound(1, 2, 3, 4), [hasStrictMode ? 1 : Object(1), 2, 3], 'bound func with too many args');
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| 57 | // @ts-expect-error
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| 58 | t.deepEqual(boundR(1, 2, 3), [sentinel, 1, 2], 'bound func with receiver, with too many args');
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| 59 | // @ts-expect-error
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| 60 | t.deepEqual(boundArg(2, 3), [sentinel, 1, 2], 'bound func with receiver and arg, with too many args');
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| 61 |
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| 62 | t.end();
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| 63 | });
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