utils.js
4.47 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.deprecate = exports.isObjectLike = exports.isDate = exports.haveBuffer = exports.isMap = exports.isRegExp = exports.isBigUInt64Array = exports.isBigInt64Array = exports.isUint8Array = exports.isAnyArrayBuffer = exports.randomBytes = exports.normalizedFunctionString = void 0;
var buffer_1 = require("buffer");
var global_1 = require("../utils/global");
/**
* Normalizes our expected stringified form of a function across versions of node
* @param fn - The function to stringify
*/
function normalizedFunctionString(fn) {
return fn.toString().replace('function(', 'function (');
}
exports.normalizedFunctionString = normalizedFunctionString;
function isReactNative() {
var g = global_1.getGlobal();
return typeof g.navigator === 'object' && g.navigator.product === 'ReactNative';
}
var insecureRandomBytes = function insecureRandomBytes(size) {
var insecureWarning = isReactNative()
? 'BSON: For React Native please polyfill crypto.getRandomValues, e.g. using: https://www.npmjs.com/package/react-native-get-random-values.'
: 'BSON: No cryptographic implementation for random bytes present, falling back to a less secure implementation.';
console.warn(insecureWarning);
var result = buffer_1.Buffer.alloc(size);
for (var i = 0; i < size; ++i)
result[i] = Math.floor(Math.random() * 256);
return result;
};
var detectRandomBytes = function () {
if (typeof window !== 'undefined') {
// browser crypto implementation(s)
var target_1 = window.crypto || window.msCrypto; // allow for IE11
if (target_1 && target_1.getRandomValues) {
return function (size) { return target_1.getRandomValues(buffer_1.Buffer.alloc(size)); };
}
}
if (typeof global !== 'undefined' && global.crypto && global.crypto.getRandomValues) {
// allow for RN packages such as https://www.npmjs.com/package/react-native-get-random-values to populate global
return function (size) { return global.crypto.getRandomValues(buffer_1.Buffer.alloc(size)); };
}
var requiredRandomBytes;
try {
// eslint-disable-next-line @typescript-eslint/no-var-requires
requiredRandomBytes = require('crypto').randomBytes;
}
catch (e) {
// keep the fallback
}
// NOTE: in transpiled cases the above require might return null/undefined
return requiredRandomBytes || insecureRandomBytes;
};
exports.randomBytes = detectRandomBytes();
function isAnyArrayBuffer(value) {
return ['[object ArrayBuffer]', '[object SharedArrayBuffer]'].includes(Object.prototype.toString.call(value));
}
exports.isAnyArrayBuffer = isAnyArrayBuffer;
function isUint8Array(value) {
return Object.prototype.toString.call(value) === '[object Uint8Array]';
}
exports.isUint8Array = isUint8Array;
function isBigInt64Array(value) {
return Object.prototype.toString.call(value) === '[object BigInt64Array]';
}
exports.isBigInt64Array = isBigInt64Array;
function isBigUInt64Array(value) {
return Object.prototype.toString.call(value) === '[object BigUint64Array]';
}
exports.isBigUInt64Array = isBigUInt64Array;
function isRegExp(d) {
return Object.prototype.toString.call(d) === '[object RegExp]';
}
exports.isRegExp = isRegExp;
function isMap(d) {
return Object.prototype.toString.call(d) === '[object Map]';
}
exports.isMap = isMap;
/** Call to check if your environment has `Buffer` */
function haveBuffer() {
return typeof global !== 'undefined' && typeof global.Buffer !== 'undefined';
}
exports.haveBuffer = haveBuffer;
// To ensure that 0.4 of node works correctly
function isDate(d) {
return isObjectLike(d) && Object.prototype.toString.call(d) === '[object Date]';
}
exports.isDate = isDate;
/**
* @internal
* this is to solve the `'someKey' in x` problem where x is unknown.
* https://github.com/typescript-eslint/typescript-eslint/issues/1071#issuecomment-541955753
*/
function isObjectLike(candidate) {
return typeof candidate === 'object' && candidate !== null;
}
exports.isObjectLike = isObjectLike;
function deprecate(fn, message) {
var warned = false;
function deprecated() {
var args = [];
for (var _i = 0; _i < arguments.length; _i++) {
args[_i] = arguments[_i];
}
if (!warned) {
console.warn(message);
warned = true;
}
return fn.apply(this, args);
}
return deprecated;
}
exports.deprecate = deprecate;
//# sourceMappingURL=utils.js.map