mirror: A fast canonicalisation utility for stable object equality
feat: author package with deno
Marais Rossouw
(Mar 30, 2024, 4:50 PM +1000)
76e847b7
65f5ee81
+904
-1114
+31
-20
.github/workflows/ci.yml
+31
-20
.github/workflows/ci.yml
···
2
2
3
3
on:
4
4
push:
5
-
branches: [main]
6
-
pull_request: {}
5
+
workflow_call:
7
6
8
7
jobs:
9
-
test:
10
-
name: Node.js v${{ matrix.node }}
8
+
deno:
11
9
runs-on: ubuntu-latest
12
-
strategy:
13
-
matrix:
14
-
node: [16, 18, 20]
15
10
steps:
16
-
- uses: actions/checkout@main
11
+
- uses: actions/checkout@v3
17
12
18
-
- name: (env) setup pnpm
19
-
uses: pnpm/action-setup@master
13
+
- uses: denoland/setup-deno@v1
14
+
with:
15
+
deno-version: v1.x
16
+
17
+
- run: deno fmt --check
18
+
- run: deno lint
19
+
- run: deno check **/*.ts
20
+
21
+
- name: Tests
22
+
run: |-
23
+
deno test --coverage=cov/
24
+
deno coverage cov/
25
+
26
+
npm:
27
+
runs-on: ubuntu-latest
28
+
steps:
29
+
- uses: actions/checkout@v3
30
+
- uses: denoland/setup-deno@v1
20
31
with:
21
-
version: 8.6.5
32
+
deno-version: v1.x
33
+
34
+
- run: deno task build
22
35
23
-
- name: (env) setup node v${{ matrix.node }}
24
-
uses: actions/setup-node@main
36
+
benchmark:
37
+
runs-on: ubuntu-latest
38
+
steps:
39
+
- uses: actions/checkout@v3
40
+
- uses: denoland/setup-deno@v1
25
41
with:
26
-
node-version: ${{ matrix.node }}
27
-
cache: pnpm
28
-
check-latest: true
42
+
deno-version: v1.x
29
43
30
-
- run: pnpm install --ignore-scripts
31
-
- run: pnpm run build
32
-
- run: pnpm run test
33
-
- run: pnpm run typecheck
44
+
- run: deno run bench/index.ts
+4
-16
.gitignore
+4
-16
.gitignore
-1
.prettierignore
-1
.prettierignore
···
1
-
.gitignore
+1
bench/deno.json
+1
bench/deno.json
···
1
+
{}
+133
bench/deno.lock
+133
bench/deno.lock
···
1
+
{
2
+
"version": "3",
3
+
"packages": {
4
+
"specifiers": {
5
+
"npm:@marais/bench": "npm:@marais/bench@0.0.8",
6
+
"npm:json-stable-stringify": "npm:json-stable-stringify@1.1.1",
7
+
"npm:object-hash": "npm:object-hash@3.0.0"
8
+
},
9
+
"npm": {
10
+
"@marais/bench@0.0.8": {
11
+
"integrity": "sha512-DZ3TqK1eUN77E2nV2Aj2aady61rveJGqGAPNQglzoJL001HJq9elFLRS6pw25e6geIEmRld9cJ5F/EHFUYa+DQ==",
12
+
"dependencies": {
13
+
"@thi.ng/bench": "@thi.ng/bench@3.5.1"
14
+
}
15
+
},
16
+
"@thi.ng/api@8.9.31": {
17
+
"integrity": "sha512-YuodNQ4TnxV8OIa8xiF9JQ+vBam16W3Z9EbTAAgX/VlQUQ7NEVBbFO8eNGcpyrfOoWdSX4b9JcPbAXuB1dfg1g==",
18
+
"dependencies": {}
19
+
},
20
+
"@thi.ng/bench@3.5.1": {
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+
"integrity": "sha512-ekueeRFmWdXiCB9vnZxzOXKJ9s6ol3injV79hHZXrL+XqjPiP9VyX4fnVvQ/vTCzR27+wYM8fbz3S1veUEF84w==",
22
+
"dependencies": {
23
+
"@thi.ng/api": "@thi.ng/api@8.9.31"
24
+
}
25
+
},
26
+
"call-bind@1.0.7": {
27
+
"integrity": "sha512-GHTSNSYICQ7scH7sZ+M2rFopRoLh8t2bLSW6BbgrtLsahOIB5iyAVJf9GjWK3cYTDaMj4XdBpM1cA6pIS0Kv2w==",
28
+
"dependencies": {
29
+
"es-define-property": "es-define-property@1.0.0",
30
+
"es-errors": "es-errors@1.3.0",
31
+
"function-bind": "function-bind@1.1.2",
32
+
"get-intrinsic": "get-intrinsic@1.2.4",
33
+
"set-function-length": "set-function-length@1.2.2"
34
+
}
35
+
},
36
+
"define-data-property@1.1.4": {
37
+
"integrity": "sha512-rBMvIzlpA8v6E+SJZoo++HAYqsLrkg7MSfIinMPFhmkorw7X+dOXVJQs+QT69zGkzMyfDnIMN2Wid1+NbL3T+A==",
38
+
"dependencies": {
39
+
"es-define-property": "es-define-property@1.0.0",
40
+
"es-errors": "es-errors@1.3.0",
41
+
"gopd": "gopd@1.0.1"
42
+
}
43
+
},
44
+
"es-define-property@1.0.0": {
45
+
"integrity": "sha512-jxayLKShrEqqzJ0eumQbVhTYQM27CfT1T35+gCgDFoL82JLsXqTJ76zv6A0YLOgEnLUMvLzsDsGIrl8NFpT2gQ==",
46
+
"dependencies": {
47
+
"get-intrinsic": "get-intrinsic@1.2.4"
48
+
}
49
+
},
50
+
"es-errors@1.3.0": {
51
+
"integrity": "sha512-Zf5H2Kxt2xjTvbJvP2ZWLEICxA6j+hAmMzIlypy4xcBg1vKVnx89Wy0GbS+kf5cwCVFFzdCFh2XSCFNULS6csw==",
52
+
"dependencies": {}
53
+
},
54
+
"function-bind@1.1.2": {
55
+
"integrity": "sha512-7XHNxH7qX9xG5mIwxkhumTox/MIRNcOgDrxWsMt2pAr23WHp6MrRlN7FBSFpCpr+oVO0F744iUgR82nJMfG2SA==",
56
+
"dependencies": {}
57
+
},
58
+
"get-intrinsic@1.2.4": {
59
+
"integrity": "sha512-5uYhsJH8VJBTv7oslg4BznJYhDoRI6waYCxMmCdnTrcCrHA/fCFKoTFz2JKKE0HdDFUF7/oQuhzumXJK7paBRQ==",
60
+
"dependencies": {
61
+
"es-errors": "es-errors@1.3.0",
62
+
"function-bind": "function-bind@1.1.2",
63
+
"has-proto": "has-proto@1.0.3",
64
+
"has-symbols": "has-symbols@1.0.3",
65
+
"hasown": "hasown@2.0.2"
66
+
}
67
+
},
68
+
"gopd@1.0.1": {
69
+
"integrity": "sha512-d65bNlIadxvpb/A2abVdlqKqV563juRnZ1Wtk6s1sIR8uNsXR70xqIzVqxVf1eTqDunwT2MkczEeaezCKTZhwA==",
70
+
"dependencies": {
71
+
"get-intrinsic": "get-intrinsic@1.2.4"
72
+
}
73
+
},
74
+
"has-property-descriptors@1.0.2": {
75
+
"integrity": "sha512-55JNKuIW+vq4Ke1BjOTjM2YctQIvCT7GFzHwmfZPGo5wnrgkid0YQtnAleFSqumZm4az3n2BS+erby5ipJdgrg==",
76
+
"dependencies": {
77
+
"es-define-property": "es-define-property@1.0.0"
78
+
}
79
+
},
80
+
"has-proto@1.0.3": {
81
+
"integrity": "sha512-SJ1amZAJUiZS+PhsVLf5tGydlaVB8EdFpaSO4gmiUKUOxk8qzn5AIy4ZeJUmh22znIdk/uMAUT2pl3FxzVUH+Q==",
82
+
"dependencies": {}
83
+
},
84
+
"has-symbols@1.0.3": {
85
+
"integrity": "sha512-l3LCuF6MgDNwTDKkdYGEihYjt5pRPbEg46rtlmnSPlUbgmB8LOIrKJbYYFBSbnPaJexMKtiPO8hmeRjRz2Td+A==",
86
+
"dependencies": {}
87
+
},
88
+
"hasown@2.0.2": {
89
+
"integrity": "sha512-0hJU9SCPvmMzIBdZFqNPXWa6dqh7WdH0cII9y+CyS8rG3nL48Bclra9HmKhVVUHyPWNH5Y7xDwAB7bfgSjkUMQ==",
90
+
"dependencies": {
91
+
"function-bind": "function-bind@1.1.2"
92
+
}
93
+
},
94
+
"isarray@2.0.5": {
95
+
"integrity": "sha512-xHjhDr3cNBK0BzdUJSPXZntQUx/mwMS5Rw4A7lPJ90XGAO6ISP/ePDNuo0vhqOZU+UD5JoodwCAAoZQd3FeAKw==",
96
+
"dependencies": {}
97
+
},
98
+
"json-stable-stringify@1.1.1": {
99
+
"integrity": "sha512-SU/971Kt5qVQfJpyDveVhQ/vya+5hvrjClFOcr8c0Fq5aODJjMwutrOfCU+eCnVD5gpx1Q3fEqkyom77zH1iIg==",
100
+
"dependencies": {
101
+
"call-bind": "call-bind@1.0.7",
102
+
"isarray": "isarray@2.0.5",
103
+
"jsonify": "jsonify@0.0.1",
104
+
"object-keys": "object-keys@1.1.1"
105
+
}
106
+
},
107
+
"jsonify@0.0.1": {
108
+
"integrity": "sha512-2/Ki0GcmuqSrgFyelQq9M05y7PS0mEwuIzrf3f1fPqkVDVRvZrPZtVSMHxdgo8Aq0sxAOb/cr2aqqA3LeWHVPg==",
109
+
"dependencies": {}
110
+
},
111
+
"object-hash@3.0.0": {
112
+
"integrity": "sha512-RSn9F68PjH9HqtltsSnqYC1XXoWe9Bju5+213R98cNGttag9q9yAOTzdbsqvIa7aNm5WffBZFpWYr2aWrklWAw==",
113
+
"dependencies": {}
114
+
},
115
+
"object-keys@1.1.1": {
116
+
"integrity": "sha512-NuAESUOUMrlIXOfHKzD6bpPu3tYt3xvjNdRIQ+FeT0lNb4K8WR70CaDxhuNguS2XG+GjkyMwOzsN5ZktImfhLA==",
117
+
"dependencies": {}
118
+
},
119
+
"set-function-length@1.2.2": {
120
+
"integrity": "sha512-pgRc4hJ4/sNjWCSS9AmnS40x3bNMDTknHgL5UaMBTMyJnU90EgWh1Rz+MC9eFu4BuN/UwZjKQuY/1v3rM7HMfg==",
121
+
"dependencies": {
122
+
"define-data-property": "define-data-property@1.1.4",
123
+
"es-errors": "es-errors@1.3.0",
124
+
"function-bind": "function-bind@1.1.2",
125
+
"get-intrinsic": "get-intrinsic@1.2.4",
126
+
"gopd": "gopd@1.0.1",
127
+
"has-property-descriptors": "has-property-descriptors@1.0.2"
128
+
}
129
+
}
130
+
}
131
+
},
132
+
"remote": {}
133
+
}
+7
-6
bench/index.js
bench/index.ts
+7
-6
bench/index.js
bench/index.ts
···
1
-
import { suite } from '@marais/bench';
1
+
import { suite } from 'npm:@marais/bench';
2
+
3
+
import objectHash from 'npm:object-hash';
4
+
import jsonStableStringify from 'npm:json-stable-stringify';
2
5
3
-
import objectHash from 'object-hash';
4
-
import { identify } from 'object-identity';
5
-
import jsonStableStringify from 'json-stable-stringify';
6
+
import { identify } from '../mod.ts';
6
7
7
8
const getObject = () => {
8
9
const c = [1];
9
-
// @ts-ignore
10
+
// @ts-expect-error circular
10
11
c.push(c);
11
12
return {
12
13
a: { b: ['c', new Set(['d', new Map([['e', 'f']]), c, 'g'])] },
···
15
16
};
16
17
};
17
18
18
-
suite(
19
+
suite<any>(
19
20
{
20
21
'object-identity'() {
21
22
return (o) => identify(o);
-9
bench/package.json
-9
bench/package.json
-59
bench/pnpm-lock.yaml
-59
bench/pnpm-lock.yaml
···
1
-
lockfileVersion: '6.0'
2
-
3
-
settings:
4
-
autoInstallPeers: true
5
-
excludeLinksFromLockfile: false
6
-
7
-
dependencies:
8
-
'@marais/bench':
9
-
specifier: 0.0.8
10
-
version: 0.0.8
11
-
json-stable-stringify:
12
-
specifier: ^1.0.2
13
-
version: 1.0.2
14
-
object-hash:
15
-
specifier: ^3.0.0
16
-
version: 3.0.0
17
-
object-identity:
18
-
specifier: file:..
19
-
version: file:..
20
-
21
-
packages:
22
-
23
-
/@marais/bench@0.0.8:
24
-
resolution: {integrity: sha512-DZ3TqK1eUN77E2nV2Aj2aady61rveJGqGAPNQglzoJL001HJq9elFLRS6pw25e6geIEmRld9cJ5F/EHFUYa+DQ==}
25
-
dependencies:
26
-
'@thi.ng/bench': 3.4.0
27
-
dev: false
28
-
29
-
/@thi.ng/api@8.8.2:
30
-
resolution: {integrity: sha512-kJCBKhHEYv/gSnbrCGnEgoAX/9bRmVSttQ0GVqQIdJlW3IFlgtz3kz357zcYNQ8mB6cY87e0XxJY3VdbYsgiyQ==}
31
-
engines: {node: '>=12.7'}
32
-
dev: false
33
-
34
-
/@thi.ng/bench@3.4.0:
35
-
resolution: {integrity: sha512-eY28lsU/7mxV2KrPebo5DTKMDslWDNTcKNNomNcJMKfdDSPmb5Mb7InqekPuv8K2iAC1EVghFBHCi/lIO22qFg==}
36
-
engines: {node: '>=12.7'}
37
-
dependencies:
38
-
'@thi.ng/api': 8.8.2
39
-
dev: false
40
-
41
-
/json-stable-stringify@1.0.2:
42
-
resolution: {integrity: sha512-eunSSaEnxV12z+Z73y/j5N37/In40GK4GmsSy+tEHJMxknvqnA7/djeYtAgW0GsWHUfg+847WJjKaEylk2y09g==}
43
-
dependencies:
44
-
jsonify: 0.0.1
45
-
dev: false
46
-
47
-
/jsonify@0.0.1:
48
-
resolution: {integrity: sha512-2/Ki0GcmuqSrgFyelQq9M05y7PS0mEwuIzrf3f1fPqkVDVRvZrPZtVSMHxdgo8Aq0sxAOb/cr2aqqA3LeWHVPg==}
49
-
dev: false
50
-
51
-
/object-hash@3.0.0:
52
-
resolution: {integrity: sha512-RSn9F68PjH9HqtltsSnqYC1XXoWe9Bju5+213R98cNGttag9q9yAOTzdbsqvIa7aNm5WffBZFpWYr2aWrklWAw==}
53
-
engines: {node: '>= 6'}
54
-
dev: false
55
-
56
-
file:..:
57
-
resolution: {directory: .., type: directory}
58
-
name: object-identity
59
-
dev: false
+32
deno.json
+32
deno.json
···
1
+
{
2
+
"version": "0.1.2",
3
+
"name": "@mr/object-identity",
4
+
"exports": "./mod.ts",
5
+
"tasks": {
6
+
"build": "deno run -A scripts/build.ts"
7
+
},
8
+
"imports": {
9
+
"@deno/dnt": "jsr:@deno/dnt@^0.41.0",
10
+
"@std/assert": "jsr:@std/assert@^0.221.0"
11
+
},
12
+
"lint": {
13
+
"rules": {
14
+
"exclude": [
15
+
"no-var",
16
+
"prefer-const",
17
+
"no-cond-assign",
18
+
"no-inner-declarations",
19
+
"no-explicit-any",
20
+
"no-fallthrough"
21
+
]
22
+
}
23
+
},
24
+
"fmt": {
25
+
"lineWidth": 100,
26
+
"singleQuote": true,
27
+
"useTabs": true
28
+
},
29
+
"exclude": [
30
+
"npm"
31
+
]
32
+
}
+357
deno.lock
+357
deno.lock
···
1
+
{
2
+
"version": "3",
3
+
"packages": {
4
+
"specifiers": {
5
+
"jsr:@deno/cache-dir@^0.8.0": "jsr:@deno/cache-dir@0.8.0",
6
+
"jsr:@deno/dnt@^0.41.0": "jsr:@deno/dnt@0.41.1",
7
+
"jsr:@deno/graph@^0.69.7": "jsr:@deno/graph@0.69.10",
8
+
"jsr:@std/assert@^0.218.2": "jsr:@std/assert@0.218.2",
9
+
"jsr:@std/assert@^0.221.0": "jsr:@std/assert@0.221.0",
10
+
"jsr:@std/bytes@^0.218.2": "jsr:@std/bytes@0.218.2",
11
+
"jsr:@std/fmt@^0.218.2": "jsr:@std/fmt@0.218.2",
12
+
"jsr:@std/fmt@^0.221.0": "jsr:@std/fmt@0.221.0",
13
+
"jsr:@std/fs@^0.218.2": "jsr:@std/fs@0.218.2",
14
+
"jsr:@std/io@^0.218.2": "jsr:@std/io@0.218.2",
15
+
"jsr:@std/path@^0.218.2": "jsr:@std/path@0.218.2",
16
+
"npm:@marais/bench": "npm:@marais/bench@0.0.8",
17
+
"npm:@ts-morph/bootstrap@0.22": "npm:@ts-morph/bootstrap@0.22.0",
18
+
"npm:code-block-writer@^13.0.1": "npm:code-block-writer@13.0.1",
19
+
"npm:json-stable-stringify": "npm:json-stable-stringify@1.1.1",
20
+
"npm:object-hash": "npm:object-hash@3.0.0"
21
+
},
22
+
"jsr": {
23
+
"@deno/cache-dir@0.8.0": {
24
+
"integrity": "e87e80a404958f6350d903e6238b72afb92468378b0b32111f7a1e4916ac7fe7",
25
+
"dependencies": [
26
+
"jsr:@deno/graph@^0.69.7",
27
+
"jsr:@std/fs@^0.218.2",
28
+
"jsr:@std/io@^0.218.2"
29
+
]
30
+
},
31
+
"@deno/dnt@0.41.1": {
32
+
"integrity": "8746a773e031ae19ef43d0eece850217b76cf1d0118fdd8e059652d7023d4aff",
33
+
"dependencies": [
34
+
"jsr:@deno/cache-dir@^0.8.0",
35
+
"jsr:@std/fmt@^0.218.2",
36
+
"jsr:@std/fs@^0.218.2",
37
+
"jsr:@std/path@^0.218.2",
38
+
"npm:@ts-morph/bootstrap@0.22",
39
+
"npm:code-block-writer@^13.0.1"
40
+
]
41
+
},
42
+
"@deno/graph@0.69.10": {
43
+
"integrity": "38fe22ac5686f6ece5daeec5a4df65c6314d7d32adcc33f77917a13cfaffa26f"
44
+
},
45
+
"@std/assert@0.218.2": {
46
+
"integrity": "7f0a5a1a8cf86607cd6c2c030584096e1ffad27fc9271429a8cb48cfbdee5eaf"
47
+
},
48
+
"@std/assert@0.221.0": {
49
+
"integrity": "a5f1aa6e7909dbea271754fd4ab3f4e687aeff4873b4cef9a320af813adb489a",
50
+
"dependencies": [
51
+
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+252
mod.test.ts
+252
mod.test.ts
···
1
+
import {
2
+
assert,
3
+
assertEquals,
4
+
assertInstanceOf,
5
+
assertNotEquals,
6
+
assertNotMatch,
7
+
} from '@std/assert';
8
+
import { identify } from './mod.ts';
9
+
10
+
Deno.test('exports', () => {
11
+
assertInstanceOf(identify, Function);
12
+
});
13
+
14
+
Deno.test('arrays :: flat', () => {
15
+
assertEquals(identify([1, 2, 3]), identify([1, 2, 3]));
16
+
});
17
+
18
+
Deno.test('arrays :: order should not matter', () => {
19
+
assertNotEquals(identify([3, 2, 1]), identify([1, 2, 3]));
20
+
});
21
+
22
+
Deno.test('arrays :: nested', () => {
23
+
assertEquals(
24
+
identify([
25
+
[3, 2, 1],
26
+
[1, 2, 3],
27
+
]),
28
+
identify([
29
+
[3, 2, 1],
30
+
[1, 2, 3],
31
+
]),
32
+
);
33
+
});
34
+
35
+
Deno.test('arrays :: circular', () => {
36
+
const arr = [1, 2, 3];
37
+
// @ts-expect-error circular
38
+
arr.push(arr);
39
+
assert(identify(arr));
40
+
assertEquals(identify(arr), 'a123~1');
41
+
assertEquals(identify(arr), identify(arr));
42
+
});
43
+
44
+
Deno.test('objects :: basic', () => {
45
+
assertEquals(identify({ foo: 'bar' }), identify({ foo: 'bar' }));
46
+
});
47
+
48
+
Deno.test('objects :: key ordering', () => {
49
+
assertEquals(
50
+
identify({ one: 'one', two: 'two' }),
51
+
identify({ two: 'two', one: 'one' }),
52
+
);
53
+
});
54
+
55
+
Deno.test('objects :: complex keys', () => {
56
+
const d = Date.now();
57
+
assertEquals(
58
+
identify({ [123]: 'one', [d]: 'two' }),
59
+
identify({
60
+
[123]: 'one',
61
+
[d]: 'two',
62
+
}),
63
+
);
64
+
});
65
+
66
+
Deno.test('objects :: nested', () => {
67
+
assertEquals(
68
+
identify({ a: { b: 'c' }, d: { e: { f: 'g' } } }),
69
+
identify({
70
+
d: { e: { f: 'g' } },
71
+
a: { b: 'c' },
72
+
}),
73
+
);
74
+
});
75
+
76
+
Deno.test('objects :: circular', () => {
77
+
const o = { a: 'b' };
78
+
// @ts-expect-error circular
79
+
o['c'] = o;
80
+
assert(identify(o));
81
+
assertEquals(identify(o), identify(o));
82
+
});
83
+
84
+
Deno.test('objects :: partial circular', () => {
85
+
const o = { v: 1 };
86
+
const a = ['a', o];
87
+
assertEquals(identify(a), identify(a));
88
+
});
89
+
90
+
// Right now they do match, because the o1 lookup is the same as o2
91
+
// as the reference is still the same, so the weakmap is the same
92
+
/*Objects.skip('with samey circular shoudlnt match', () => {
93
+
const o1: any = { a: 1, b: 2 };
94
+
const o2: any = { a: 1, b: 2 };
95
+
o1['c'] = o1;
96
+
o1['d'] = o2;
97
+
98
+
o2['c'] = o2; // 👈 #1
99
+
100
+
const a = identify(o1);
101
+
102
+
o2['c'] = o1; // 👈 different from #1
103
+
104
+
const b = identify(o1);
105
+
106
+
assertNotEquals(a, b, `${a} != ${b}`);
107
+
});*/
108
+
109
+
Deno.test('objects :: same values between types shouldnt match', () => {
110
+
assertNotEquals(identify({ a: 'b' }), identify(['a', 'b']));
111
+
});
112
+
113
+
Deno.test('objects :: same hash for Map or Object', () => {
114
+
assertEquals(identify({ a: 'b' }), identify(new Map([['a', 'b']])));
115
+
});
116
+
117
+
Deno.test('sets :: shouldnt be ordered', () => {
118
+
assertNotEquals(
119
+
identify(new Set([1, 2, 3])),
120
+
identify(new Set([3, 2, 1])),
121
+
);
122
+
});
123
+
124
+
Deno.test('sets :: shouldnt be ordered', () => {
125
+
assertNotEquals(
126
+
identify(new Set([{ a: 'a' }, { b: 'b' }])),
127
+
identify(new Set([{ b: 'b' }, { a: 'a' }])),
128
+
);
129
+
});
130
+
131
+
Deno.test('sets :: circular', () => {
132
+
const s = new Set([1, 2, 3]);
133
+
// @ts-expect-error circular
134
+
s.add(s);
135
+
assert(identify(s));
136
+
assertEquals(identify(s), identify(s));
137
+
});
138
+
139
+
Deno.test('maps :: basic', () => {
140
+
assertEquals(
141
+
identify(
142
+
new Map([
143
+
['a', 'b'],
144
+
['c', 'd'],
145
+
]),
146
+
),
147
+
identify(
148
+
new Map([
149
+
['c', 'd'],
150
+
['a', 'b'],
151
+
]),
152
+
),
153
+
);
154
+
});
155
+
156
+
Deno.test('maps :: circular', () => {
157
+
const m = new Map([
158
+
['a', 'b'],
159
+
['c', 'd'],
160
+
]);
161
+
// @ts-expect-error circular
162
+
m.set('e', m);
163
+
assert(identify(m));
164
+
assertEquals(identify(m), identify(m));
165
+
});
166
+
167
+
Deno.test('values :: primitives', () => {
168
+
const t = (v: any) =>
169
+
assertEquals(
170
+
identify(v),
171
+
identify(v),
172
+
`Value ${v} should have hashed correctly.`,
173
+
);
174
+
175
+
t('test');
176
+
t(new Date());
177
+
t(NaN);
178
+
t(true);
179
+
t(false);
180
+
t(/test/);
181
+
t(123);
182
+
t(null);
183
+
t(undefined);
184
+
// TODO: Solve for symbols
185
+
// t(Symbol());
186
+
// t(Symbol("test"));
187
+
});
188
+
189
+
Deno.test('values :: circular ref should be consistent', () => {
190
+
let o: any = { a: 1, c: 2 };
191
+
o.b = o;
192
+
o.d = new Map(); // the map is seen 2nd
193
+
o.d.set('x', o.d);
194
+
195
+
assertEquals(Object.keys(o), ['a', 'c', 'b', 'd']);
196
+
197
+
const a = identify(o);
198
+
199
+
o = { a: 1 };
200
+
o.d = new Map(); // the map is seen first
201
+
o.d.set('x', o.d);
202
+
o.b = o;
203
+
o.c = 2;
204
+
205
+
assertEquals(Object.keys(o), ['a', 'd', 'b', 'c']);
206
+
207
+
const b = identify(o);
208
+
209
+
// the circular ref should be the same
210
+
assertEquals(a, b, `${a} === ${b}`);
211
+
});
212
+
213
+
Deno.test('values :: circular deeply nested objects should equal', () => {
214
+
const o1: any = {
215
+
b: {
216
+
c: 123,
217
+
},
218
+
};
219
+
220
+
o1.b.d = o1;
221
+
o1.x = [9, o1.b];
222
+
223
+
const o2: any = {
224
+
b: {
225
+
c: 123,
226
+
},
227
+
};
228
+
229
+
o2.b.d = o2;
230
+
o2.x = [9, o2.b];
231
+
const a = identify(o1);
232
+
const b = identify(o2);
233
+
assertEquals(a, b, `${a} === ${b}`);
234
+
});
235
+
236
+
Deno.test('values :: all elements visited', () => {
237
+
const c = [1];
238
+
// @ts-expect-error circular
239
+
c.push(c);
240
+
const hash = identify({
241
+
a: { b: ['c', new Set(['d', new Map([['e', 'f']]), c, 'g'])] },
242
+
});
243
+
assertEquals(hash, 'oaobacadoefa1~5g');
244
+
});
245
+
246
+
Deno.test('values :: should only be seen once', () => {
247
+
const hash = identify({
248
+
a: [[1], [2], [3]],
249
+
b: new Set([new Set([1]), new Set([2]), new Set([3])]),
250
+
});
251
+
assertNotMatch(hash, /~\d+/);
252
+
});
-43
package.json
-43
package.json
···
1
-
{
2
-
"name": "object-identity",
3
-
"version": "0.1.2",
4
-
"repository": "maraisr/object-identity",
5
-
"license": "MIT",
6
-
"author": "Marais Rossow <me@marais.dev> (https://marais.io)",
7
-
"sideEffects": false,
8
-
"exports": {
9
-
".": {
10
-
"types": "./index.d.ts",
11
-
"import": "./index.mjs",
12
-
"require": "./index.js"
13
-
},
14
-
"./package.json": "./package.json"
15
-
},
16
-
"main": "index.js",
17
-
"module": "index.mjs",
18
-
"types": "index.d.ts",
19
-
"files": [
20
-
"index.js",
21
-
"index.mjs",
22
-
"index.d.ts"
23
-
],
24
-
"scripts": {
25
-
"bench": "node bench/index.js",
26
-
"build": "bundt --minify",
27
-
"format": "prettier --write .",
28
-
"test": "uvu src \".test.ts$\" -r tsm",
29
-
"typecheck": "tsc --noEmit"
30
-
},
31
-
"prettier": "@marais/prettier",
32
-
"devDependencies": {
33
-
"@marais/prettier": "0.0.4",
34
-
"@marais/tsconfig": "0.0.4",
35
-
"bundt": "2.0.0-next.5",
36
-
"tsm": "2.3.0",
37
-
"typescript": "5.1.3",
38
-
"uvu": "0.5.4"
39
-
},
40
-
"volta": {
41
-
"node": "18.16.1"
42
-
}
43
-
}
-626
pnpm-lock.yaml
-626
pnpm-lock.yaml
···
1
-
lockfileVersion: '6.0'
2
-
3
-
settings:
4
-
autoInstallPeers: true
5
-
excludeLinksFromLockfile: false
6
-
7
-
devDependencies:
8
-
'@marais/prettier':
9
-
specifier: 0.0.4
10
-
version: 0.0.4
11
-
'@marais/tsconfig':
12
-
specifier: 0.0.4
13
-
version: 0.0.4
14
-
bundt:
15
-
specifier: 2.0.0-next.5
16
-
version: 2.0.0-next.5
17
-
tsm:
18
-
specifier: 2.3.0
19
-
version: 2.3.0
20
-
typescript:
21
-
specifier: 5.1.3
22
-
version: 5.1.3
23
-
uvu:
24
-
specifier: 0.5.4
25
-
version: 0.5.4
26
-
27
-
packages:
28
-
29
-
/@esbuild/android-arm@0.15.18:
30
-
resolution: {integrity: sha512-5GT+kcs2WVGjVs7+boataCkO5Fg0y4kCjzkB5bAip7H4jfnOS3dA6KPiww9W1OEKTKeAcUVhdZGvgI65OXmUnw==}
31
-
engines: {node: '>=12'}
32
-
cpu: [arm]
33
-
os: [android]
34
-
requiresBuild: true
35
-
dev: true
36
-
optional: true
37
-
38
-
/@esbuild/linux-loong64@0.14.54:
39
-
resolution: {integrity: sha512-bZBrLAIX1kpWelV0XemxBZllyRmM6vgFQQG2GdNb+r3Fkp0FOh1NJSvekXDs7jq70k4euu1cryLMfU+mTXlEpw==}
40
-
engines: {node: '>=12'}
41
-
cpu: [loong64]
42
-
os: [linux]
43
-
requiresBuild: true
44
-
dev: true
45
-
optional: true
46
-
47
-
/@esbuild/linux-loong64@0.15.18:
48
-
resolution: {integrity: sha512-L4jVKS82XVhw2nvzLg/19ClLWg0y27ulRwuP7lcyL6AbUWB5aPglXY3M21mauDQMDfRLs8cQmeT03r/+X3cZYQ==}
49
-
engines: {node: '>=12'}
50
-
cpu: [loong64]
51
-
os: [linux]
52
-
requiresBuild: true
53
-
dev: true
54
-
optional: true
55
-
56
-
/@jridgewell/gen-mapping@0.3.3:
57
-
resolution: {integrity: sha512-HLhSWOLRi875zjjMG/r+Nv0oCW8umGb0BgEhyX3dDX3egwZtB8PqLnjz3yedt8R5StBrzcg4aBpnh8UA9D1BoQ==}
58
-
engines: {node: '>=6.0.0'}
59
-
dependencies:
60
-
'@jridgewell/set-array': 1.1.2
61
-
'@jridgewell/sourcemap-codec': 1.4.15
62
-
'@jridgewell/trace-mapping': 0.3.18
63
-
dev: true
64
-
65
-
/@jridgewell/resolve-uri@3.1.0:
66
-
resolution: {integrity: sha512-F2msla3tad+Mfht5cJq7LSXcdudKTWCVYUgw6pLFOOHSTtZlj6SWNYAp+AhuqLmWdBO2X5hPrLcu8cVP8fy28w==}
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engines: {node: '>=6.0.0'}
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dev: true
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-
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/@jridgewell/set-array@1.1.2:
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engines: {node: '>=6.0.0'}
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dev: true
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-
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77
-
dependencies:
78
-
'@jridgewell/gen-mapping': 0.3.3
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-
'@jridgewell/trace-mapping': 0.3.18
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-
dev: true
81
-
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/@jridgewell/sourcemap-codec@1.4.14:
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dev: true
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-
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/@jridgewell/sourcemap-codec@1.4.15:
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dev: true
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-
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/@jridgewell/trace-mapping@0.3.18:
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92
-
dependencies:
93
-
'@jridgewell/resolve-uri': 3.1.0
94
-
'@jridgewell/sourcemap-codec': 1.4.14
95
-
dev: true
96
-
97
-
/@marais/prettier@0.0.4:
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-
resolution: {integrity: sha512-fcJgHALkAkmOyMEioqMaikXlUQLy9jj+SZjlI2AD9V0vEO1EjR3ZI5vz3y6A0Bz/PgskbyM9+F/A44850UWrhQ==}
99
-
dev: true
100
-
101
-
/@marais/tsconfig@0.0.4:
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dev: true
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-
105
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/acorn@8.9.0:
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resolution: {integrity: sha512-jaVNAFBHNLXspO543WnNNPZFRtavh3skAkITqD0/2aeMkKZTN+254PyhwxFYrk3vQ1xfY+2wbesJMs/JC8/PwQ==}
107
-
engines: {node: '>=0.4.0'}
108
-
hasBin: true
109
-
dev: true
110
-
111
-
/buffer-from@1.1.2:
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-
resolution: {integrity: sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==}
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dev: true
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-
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-
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117
-
engines: {node: '>=12'}
118
-
hasBin: true
119
-
dependencies:
120
-
esbuild: 0.14.54
121
-
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122
-
terser: 5.18.1
123
-
dev: true
124
-
125
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/commander@2.20.3:
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-
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dev: true
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141
-
engines: {node: '>=12'}
142
-
cpu: [x64]
143
-
os: [android]
144
-
requiresBuild: true
145
-
dev: true
146
-
optional: true
147
-
148
-
/esbuild-android-64@0.15.18:
149
-
resolution: {integrity: sha512-wnpt3OXRhcjfIDSZu9bnzT4/TNTDsOUvip0foZOUBG7QbSt//w3QV4FInVJxNhKc/ErhUxc5z4QjHtMi7/TbgA==}
150
-
engines: {node: '>=12'}
151
-
cpu: [x64]
152
-
os: [android]
153
-
requiresBuild: true
154
-
dev: true
155
-
optional: true
156
-
157
-
/esbuild-android-arm64@0.14.54:
158
-
resolution: {integrity: sha512-F9E+/QDi9sSkLaClO8SOV6etqPd+5DgJje1F9lOWoNncDdOBL2YF59IhsWATSt0TLZbYCf3pNlTHvVV5VfHdvg==}
159
-
engines: {node: '>=12'}
160
-
cpu: [arm64]
161
-
os: [android]
162
-
requiresBuild: true
163
-
dev: true
164
-
optional: true
165
-
166
-
/esbuild-android-arm64@0.15.18:
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esbuild-linux-s390x: 0.15.18
550
-
esbuild-netbsd-64: 0.15.18
551
-
esbuild-openbsd-64: 0.15.18
552
-
esbuild-sunos-64: 0.15.18
553
-
esbuild-windows-32: 0.15.18
554
-
esbuild-windows-64: 0.15.18
555
-
esbuild-windows-arm64: 0.15.18
556
-
dev: true
557
-
558
-
/kleur@4.1.5:
559
-
resolution: {integrity: sha512-o+NO+8WrRiQEE4/7nwRJhN1HWpVmJm511pBHUxPLtp0BUISzlBplORYSmTclCnJvQq2tKu/sgl3xVpkc7ZWuQQ==}
560
-
engines: {node: '>=6'}
561
-
dev: true
562
-
563
-
/mri@1.2.0:
564
-
resolution: {integrity: sha512-tzzskb3bG8LvYGFF/mDTpq3jpI6Q9wc3LEmBaghu+DdCssd1FakN7Bc0hVNmEyGq1bq3RgfkCb3cmQLpNPOroA==}
565
-
engines: {node: '>=4'}
566
-
dev: true
567
-
568
-
/rewrite-imports@2.0.3:
569
-
resolution: {integrity: sha512-R7ICJEeP3y+d/q4C8YEJj9nRP0JyiSqG07uc0oQh8JvAe706dDFVL95GBZYCjADqmhArZWWjfM/5EcmVu4/B+g==}
570
-
engines: {node: '>=6'}
571
-
dev: true
572
-
573
-
/sade@1.8.1:
574
-
resolution: {integrity: sha512-xal3CZX1Xlo/k4ApwCFrHVACi9fBqJ7V+mwhBsuf/1IOKbBy098Fex+Wa/5QMubw09pSZ/u8EY8PWgevJsXp1A==}
575
-
engines: {node: '>=6'}
576
-
dependencies:
577
-
mri: 1.2.0
578
-
dev: true
579
-
580
-
/source-map-support@0.5.21:
581
-
resolution: {integrity: sha512-uBHU3L3czsIyYXKX88fdrGovxdSCoTGDRZ6SYXtSRxLZUzHg5P/66Ht6uoUlHu9EZod+inXhKo3qQgwXUT/y1w==}
582
-
dependencies:
583
-
buffer-from: 1.1.2
584
-
source-map: 0.6.1
585
-
dev: true
586
-
587
-
/source-map@0.6.1:
588
-
resolution: {integrity: sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==}
589
-
engines: {node: '>=0.10.0'}
590
-
dev: true
591
-
592
-
/terser@5.18.1:
593
-
resolution: {integrity: sha512-j1n0Ao919h/Ai5r43VAnfV/7azUYW43GPxK7qSATzrsERfW7+y2QW9Cp9ufnRF5CQUWbnLSo7UJokSWCqg4tsQ==}
594
-
engines: {node: '>=10'}
595
-
hasBin: true
596
-
dependencies:
597
-
'@jridgewell/source-map': 0.3.3
598
-
acorn: 8.9.0
599
-
commander: 2.20.3
600
-
source-map-support: 0.5.21
601
-
dev: true
602
-
603
-
/tsm@2.3.0:
604
-
resolution: {integrity: sha512-++0HFnmmR+gMpDtKTnW3XJ4yv9kVGi20n+NfyQWB9qwJvTaIWY9kBmzek2YUQK5APTQ/1DTrXmm4QtFPmW9Rzw==}
605
-
engines: {node: '>=12'}
606
-
hasBin: true
607
-
dependencies:
608
-
esbuild: 0.15.18
609
-
dev: true
610
-
611
-
/typescript@5.1.3:
612
-
resolution: {integrity: sha512-XH627E9vkeqhlZFQuL+UsyAXEnibT0kWR2FWONlr4sTjvxyJYnyefgrkyECLzM5NenmKzRAy2rR/OlYLA1HkZw==}
613
-
engines: {node: '>=14.17'}
614
-
hasBin: true
615
-
dev: true
616
-
617
-
/uvu@0.5.4:
618
-
resolution: {integrity: sha512-x1CyUjcP9VKaNPhjeB3FIc/jqgLsz2Q9LFhRzUTu/jnaaHILEGNuE0XckQonl8ISLcwyk9I2EZvWlYsQnwxqvQ==}
619
-
engines: {node: '>=8'}
620
-
hasBin: true
621
-
dependencies:
622
-
dequal: 2.0.3
623
-
diff: 5.1.0
624
-
kleur: 4.1.5
625
-
sade: 1.8.1
626
-
dev: true
+17
-25
readme.md
+17
-25
readme.md
···
2
2
3
3
<samp>
4
4
5
-
# object-identity
5
+
# object-identity [](https://licenses.dev/npm/object-identity)
6
6
7
7
</samp>
8
8
9
9
**A utility that provides a stable identity of an object**
10
10
11
-
<a href="https://npm-stat.com/charts.html?package=object-identity">
12
-
<img src="https://badgen.net/npm/dm/object-identity?color=black&label=npm%20downloads" alt="js downloads">
13
-
</a>
14
-
<a href="https://licenses.dev/npm/object-identity">
15
-
<img src="https://licenses.dev/b/npm/object-identity?style=dark" alt="licenses" />
16
-
</a>
17
-
<a href="https://unpkg.com/object-identity/index.mjs">
18
-
<img src="https://img.badgesize.io/https://unpkg.com/object-identity/index.mjs?compression=gzip&label=gzip&color=black" alt="gzip size" />
19
-
</a>
20
-
<a href="https://unpkg.com/object-identity/index.mjs">
21
-
<img src="https://img.badgesize.io/https://unpkg.com/object-identity/index.mjs?compression=brotli&label=brotli&color=black" alt="brotli size" />
22
-
</a>
23
-
24
-
<br>
25
-
<br>
26
-
27
11
<sup>
28
12
29
-
This is free to use software, but if you do like it, consisder supporting me ❤️
13
+
This is free to use software, but if you do like it, consider supporting me ❤️
30
14
31
15
[](https://github.com/sponsors/maraisr)
32
16
[](https://www.buymeacoffee.com/marais)
···
40
24
- ✅ **Intuitive**
41
25
- 🌪 **Recursive/Circular support**
42
26
- 🏎 **Performant** — check the [benchmarks](#-benchmark).
43
-
- 🪶 **Lightweight** — a mere 387B and no [dependencies](https://npm.anvaka.com/#/view/2d/object-identity/).
27
+
- 🪶 **Lightweight** — a mere 387B and no
28
+
[dependencies](https://npm.anvaka.com/#/view/2d/object-identity/).
44
29
45
30
## 🚀 Usage
31
+
32
+
> Avaliable on [jsr](https://jsr.io/@mr/object-identity),
33
+
> [NPM](https://npmjs.com/package/object-identity) and
34
+
> [deno.land](https://deno.land/x/object_identity)
46
35
47
36
```ts
48
37
import { identify } from 'object-identity';
38
+
// or
39
+
import { identify } from 'https://deno.land/x/object_identity';
49
40
50
41
// ~> identity the object
51
42
const id1 = identify({ a: new Set(['b', 'c', new Map([['d', 'e']])]) });
···
58
49
59
50
## 💨 Benchmark
60
51
61
-
> via the [`/bench`](/bench) directory with Node v18.16.1 (Apple M1 Pro)
52
+
> via the [`/bench`](/bench) directory with deno 1.41.3
62
53
63
54
```
64
-
✔ object-identity ~ 55,252,648 ops/sec ± 0.11%
65
-
✔ object-hash ~ 96,936 ops/sec ± 0.01%
66
-
✔ json-stable-stringify ~ 605,425 ops/sec ± 0.02%
55
+
✔ object-identity ~ 14,646,170 ops/sec ± 0.10%
56
+
✔ object-hash ~ 144,060 ops/sec ± 0.01%
57
+
✔ json-stable-stringify ~ 638,559 ops/sec ± 0.01%
67
58
```
68
59
69
-
> ^ `object-identity` is not as feature-full it's alternatives, specifically around `function` values and other node
70
-
> builtins. So take this benchmark with a grain of salt, as it's only testing "json-like" payloads.
60
+
> ^ `object-identity` is not as feature-full it's alternatives, specifically around `function`
61
+
> values and other node builtins. So take this benchmark with a grain of salt, as it's only testing
62
+
> "json-like" payloads.
71
63
72
64
## License
73
65
+55
scripts/build.ts
+55
scripts/build.ts
···
1
+
import { build, emptyDir } from '@deno/dnt';
2
+
3
+
await emptyDir('./npm');
4
+
5
+
await build({
6
+
entryPoints: ['./mod.ts'],
7
+
outDir: './npm',
8
+
shims: {
9
+
deno: 'dev',
10
+
},
11
+
12
+
declaration: 'inline',
13
+
declarationMap: false,
14
+
scriptModule: 'cjs',
15
+
typeCheck: 'both',
16
+
test: true,
17
+
18
+
importMap: 'deno.json',
19
+
20
+
package: {
21
+
name: 'object-identity',
22
+
version: Deno.args[0],
23
+
repository: 'maraisr/object-identity',
24
+
license: 'MIT',
25
+
author: {
26
+
name: 'Marais Rososuw',
27
+
email: 'me@marais.dev',
28
+
url: 'https://marais.io',
29
+
},
30
+
keywords: [
31
+
'object',
32
+
'identity',
33
+
'hash',
34
+
'fingerprint',
35
+
],
36
+
},
37
+
38
+
compilerOptions: {
39
+
target: 'ES2022',
40
+
lib: ['ES2022', 'WebWorker'],
41
+
},
42
+
43
+
filterDiagnostic(diag) {
44
+
let txt = diag.messageText.toString();
45
+
return !txt.includes(
46
+
// ignore type error for missing Deno built-in information
47
+
`Type 'ReadableStream<string>' must have a '[Symbol.asyncIterator]()' method that returns an async iterator`,
48
+
);
49
+
},
50
+
51
+
async postBuild() {
52
+
await Deno.copyFile('license', 'npm/license');
53
+
await Deno.copyFile('readme.md', 'npm/readme.md');
54
+
},
55
+
});
-1
src/index.d.ts
-1
src/index.d.ts
···
1
-
export function identify<T>(input: T): string;
-286
src/index.test.ts
-286
src/index.test.ts
···
1
-
import { suite } from 'uvu';
2
-
import * as assert from 'uvu/assert';
3
-
import { identify } from '../src';
4
-
5
-
// ~ API
6
-
7
-
const API = suite('exports');
8
-
9
-
API('should export a function', () => {
10
-
assert.type(identify, 'function');
11
-
});
12
-
13
-
// ~ Arrays
14
-
15
-
const Arrays = suite('array');
16
-
17
-
Arrays('flat', () => {
18
-
assert.equal(identify([1, 2, 3]), identify([1, 2, 3]));
19
-
});
20
-
21
-
Arrays('order should matter', () => {
22
-
assert.not.equal(identify([3, 2, 1]), identify([1, 2, 3]));
23
-
});
24
-
25
-
Arrays('nested', () => {
26
-
assert.equal(
27
-
identify([
28
-
[3, 2, 1],
29
-
[1, 2, 3],
30
-
]),
31
-
identify([
32
-
[3, 2, 1],
33
-
[1, 2, 3],
34
-
]),
35
-
);
36
-
});
37
-
38
-
Arrays('circular', () => {
39
-
const arr = [1, 2, 3];
40
-
// @ts-ignore
41
-
arr.push(arr);
42
-
assert.not.throws(() => identify(arr), /Maximum call stack size exceeded/);
43
-
assert.equal(identify(arr), identify(arr));
44
-
});
45
-
46
-
Arrays('circular should know its circular', () => {
47
-
const arr = [1, 2, 3];
48
-
// @ts-ignore
49
-
arr.push(arr);
50
-
assert.equal(identify(arr), 'a123~1');
51
-
});
52
-
53
-
// ~ Objects
54
-
55
-
const Objects = suite('object');
56
-
57
-
Objects('basic', () => {
58
-
assert.equal(identify({ foo: 'bar' }), identify({ foo: 'bar' }));
59
-
});
60
-
61
-
Objects('key ordering', () => {
62
-
assert.equal(
63
-
identify({ one: 'one', two: 'two' }),
64
-
identify({ two: 'two', one: 'one' }),
65
-
);
66
-
});
67
-
68
-
Objects('complex keys', () => {
69
-
const d = Date.now();
70
-
assert.equal(
71
-
identify({ [123]: 'one', [d]: 'two' }),
72
-
identify({
73
-
[123]: 'one',
74
-
[d]: 'two',
75
-
}),
76
-
);
77
-
});
78
-
79
-
Objects('nested', () => {
80
-
assert.equal(
81
-
identify({ a: { b: 'c' }, d: { e: { f: 'g' } } }),
82
-
identify({
83
-
d: { e: { f: 'g' } },
84
-
a: { b: 'c' },
85
-
}),
86
-
);
87
-
});
88
-
89
-
Objects('circular', () => {
90
-
const o = { a: 'b' };
91
-
// @ts-ignore
92
-
o['c'] = o;
93
-
assert.not.throws(() => identify(o), /Maximum call stack size exceeded/);
94
-
assert.equal(identify(o), identify(o));
95
-
});
96
-
97
-
Objects('partial circular', () => {
98
-
const o = { v: 1 };
99
-
const a = ['a', o];
100
-
assert.equal(identify(a), identify(a));
101
-
});
102
-
103
-
// Right now they do match, because the o1 lookup is the same as o2
104
-
// as the reference is still the same, so the weakmap is the same
105
-
Objects.skip('with samey circular shoudlnt match', () => {
106
-
const o1: any = { a: 1, b: 2 };
107
-
const o2: any = { a: 1, b: 2 };
108
-
o1['c'] = o1;
109
-
o1['d'] = o2;
110
-
111
-
o2['c'] = o2; // 👈 #1
112
-
113
-
const a = identify(o1);
114
-
115
-
o2['c'] = o1; // 👈 different from #1
116
-
117
-
const b = identify(o1);
118
-
119
-
assert.not.equal(a, b, `${a} != ${b}`);
120
-
});
121
-
122
-
Objects('same values between types shouldnt match', () => {
123
-
assert.not.equal(identify({ a: 'b' }), identify(['a', 'b']));
124
-
});
125
-
126
-
Objects('same hash for Map or Object', () => {
127
-
assert.equal(identify({ a: 'b' }), identify(new Map([['a', 'b']])));
128
-
});
129
-
130
-
// ~ Sets
131
-
132
-
const Sets = suite('set');
133
-
134
-
Sets('shouldnt be ordered', () => {
135
-
assert.not.equal(
136
-
identify(new Set([1, 2, 3])),
137
-
identify(new Set([3, 2, 1])),
138
-
);
139
-
});
140
-
141
-
Sets('shouldnt be ordered', () => {
142
-
assert.not.equal(
143
-
identify(new Set([{ a: 'a' }, { b: 'b' }])),
144
-
identify(new Set([{ b: 'b' }, { a: 'a' }])),
145
-
);
146
-
});
147
-
148
-
Sets('circular', () => {
149
-
const s = new Set([1, 2, 3]);
150
-
// @ts-ignore
151
-
s.add(s);
152
-
assert.not.throws(() => identify(s), /Maximum call stack size exceeded/);
153
-
assert.equal(identify(s), identify(s));
154
-
});
155
-
156
-
// ~ Maps
157
-
158
-
const Maps = suite('map');
159
-
160
-
Maps('basic', () => {
161
-
assert.equal(
162
-
identify(
163
-
new Map([
164
-
['a', 'b'],
165
-
['c', 'd'],
166
-
]),
167
-
),
168
-
identify(
169
-
new Map([
170
-
['c', 'd'],
171
-
['a', 'b'],
172
-
]),
173
-
),
174
-
);
175
-
});
176
-
177
-
Maps('circular', () => {
178
-
const m = new Map([
179
-
['a', 'b'],
180
-
['c', 'd'],
181
-
]);
182
-
// @ts-ignore
183
-
m.set('e', m);
184
-
assert.not.throws(() => identify(m), /Maximum call stack size exceeded/);
185
-
assert.equal(identify(m), identify(m));
186
-
});
187
-
188
-
// ~ Values
189
-
190
-
const Values = suite('values');
191
-
192
-
Values('primitives', () => {
193
-
const t = (v: any) =>
194
-
assert.equal(
195
-
identify(v),
196
-
identify(v),
197
-
`Value ${v} should have hashed correctly.`,
198
-
);
199
-
200
-
t('test');
201
-
t(new Date());
202
-
t(NaN);
203
-
t(true);
204
-
t(false);
205
-
t(/test/);
206
-
t(123);
207
-
t(null);
208
-
t(undefined);
209
-
// TODO: Solve for symbols
210
-
// t(Symbol());
211
-
// t(Symbol("test"));
212
-
});
213
-
214
-
Values('circular ref should be consistent', () => {
215
-
let o: any = { a: 1, c: 2 };
216
-
o.b = o;
217
-
o.d = new Map(); // the map is seen 2nd
218
-
o.d.set('x', o.d);
219
-
220
-
assert.equal(Object.keys(o), ['a', 'c', 'b', 'd']);
221
-
222
-
const a = identify(o);
223
-
224
-
o = { a: 1 };
225
-
o.d = new Map(); // the map is seen first
226
-
o.d.set('x', o.d);
227
-
o.b = o;
228
-
o.c = 2;
229
-
230
-
assert.equal(Object.keys(o), ['a', 'd', 'b', 'c']);
231
-
232
-
const b = identify(o);
233
-
234
-
// the circular ref should be the same
235
-
assert.equal(a, b, `${a} === ${b}`);
236
-
});
237
-
238
-
Values('circular deeply nested objects should equal', () => {
239
-
const o1: any = {
240
-
b: {
241
-
c: 123,
242
-
},
243
-
};
244
-
245
-
o1.b.d = o1;
246
-
o1.x = [9, o1.b];
247
-
248
-
const o2: any = {
249
-
b: {
250
-
c: 123,
251
-
},
252
-
};
253
-
254
-
o2.b.d = o2;
255
-
o2.x = [9, o2.b];
256
-
const a = identify(o1);
257
-
const b = identify(o2);
258
-
assert.equal(a, b, `${a} === ${b}`);
259
-
});
260
-
261
-
Values('all elements visited', () => {
262
-
const c = [1];
263
-
// @ts-ignore
264
-
c.push(c);
265
-
const hash = identify({
266
-
a: { b: ['c', new Set(['d', new Map([['e', 'f']]), c, 'g'])] },
267
-
});
268
-
assert.equal(hash, 'oaobacadoefa1~5g');
269
-
});
270
-
271
-
Values('should only be seen once', () => {
272
-
const hash = identify({
273
-
a: [[1], [2], [3]],
274
-
b: new Set([new Set([1]), new Set([2]), new Set([3])]),
275
-
});
276
-
assert.not.match(hash, /~\d+/);
277
-
});
278
-
279
-
// --
280
-
281
-
API.run();
282
-
Arrays.run();
283
-
Objects.run();
284
-
Sets.run();
285
-
Maps.run();
286
-
Values.run();
+15
-2
src/index.ts
mod.ts
+15
-2
src/index.ts
mod.ts
···
10
10
if (
11
11
!(type === '[object RegExp]' || type === '[object Date]') &&
12
12
seen.has(input)
13
-
)
13
+
) {
14
14
return seen.get(input)!;
15
+
}
15
16
seen.set(input, '~' + ++ref_index);
16
17
17
18
switch (type) {
18
19
case '[object Set]':
19
-
tmp = Array.from(input);
20
+
tmp = Array.from(input as Set<unknown>);
20
21
case '[object Array]':
21
22
{
22
23
tmp ||= input;
···
63
64
return out;
64
65
}
65
66
67
+
/**
68
+
* Creates a shape equivalent identifier for an input object.
69
+
* This is useful for comparing objects, where keys could be provided in any order.
70
+
*
71
+
* @example
72
+
* ```ts
73
+
* const obj = { a: 1, b: 2 };
74
+
* const obj2 = { b: 2, a: 1 };
75
+
*
76
+
* console.log(identify(obj) === identify(obj2)); // true
77
+
* ```
78
+
*/
66
79
export function identify<T>(input: T): string {
67
80
return walk(input, 0);
68
81
}
-9
src/index.types.ts
-9
src/index.types.ts