console.log(Object.getOwnPropertyNames(Array.prototype).filter(item => typeof Array.prototype[item] === "function"));
Array(39) [ "toString", "toLocaleString", "join", "reverse", "sort", "push", "pop", "shift", "unshift", "splice", … ]
0: "toString"
1: "toLocaleString"
2: "join"
3: "reverse"
4: "sort"
5: "push"
6: "pop"
7: "shift"
8: "unshift"
9: "splice"
10: "concat"
11: "slice"
12: "lastIndexOf"
13: "indexOf"
14: "forEach"
15: "map"
16: "filter"
17: "reduce"
18: "reduceRight"
19: "some"
20: "every"
21: "find"
22: "findIndex"
23: "copyWithin"
24: "fill"
25: "entries"
26: "keys"
27: "values"
28: "includes"
29: "flatMap"
30: "flat"
31: "at"
32: "findLast"
33: "findLastIndex"
34: "toReversed"
35: "toSorted"
36: "toSpliced"
37: "with"
38: "constructor"
length: 39
