File size: 3,212 Bytes
dbda22c | 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 | // Copyright 2013 Lovell Fuller and others.
// SPDX-License-Identifier: Apache-2.0
'use strict';
/**
* Is this value defined and not null?
* @private
*/
const defined = function (val) {
return typeof val !== 'undefined' && val !== null;
};
/**
* Is this value an object?
* @private
*/
const object = function (val) {
return typeof val === 'object';
};
/**
* Is this value a plain object?
* @private
*/
const plainObject = function (val) {
return Object.prototype.toString.call(val) === '[object Object]';
};
/**
* Is this value a function?
* @private
*/
const fn = function (val) {
return typeof val === 'function';
};
/**
* Is this value a boolean?
* @private
*/
const bool = function (val) {
return typeof val === 'boolean';
};
/**
* Is this value a Buffer object?
* @private
*/
const buffer = function (val) {
return val instanceof Buffer;
};
/**
* Is this value a typed array object?. E.g. Uint8Array or Uint8ClampedArray?
* @private
*/
const typedArray = function (val) {
if (defined(val)) {
switch (val.constructor) {
case Uint8Array:
case Uint8ClampedArray:
case Int8Array:
case Uint16Array:
case Int16Array:
case Uint32Array:
case Int32Array:
case Float32Array:
case Float64Array:
return true;
}
}
return false;
};
/**
* Is this value an ArrayBuffer object?
* @private
*/
const arrayBuffer = function (val) {
return val instanceof ArrayBuffer;
};
/**
* Is this value a non-empty string?
* @private
*/
const string = function (val) {
return typeof val === 'string' && val.length > 0;
};
/**
* Is this value a real number?
* @private
*/
const number = function (val) {
return typeof val === 'number' && !Number.isNaN(val);
};
/**
* Is this value an integer?
* @private
*/
const integer = function (val) {
return Number.isInteger(val);
};
/**
* Is this value within an inclusive given range?
* @private
*/
const inRange = function (val, min, max) {
return val >= min && val <= max;
};
/**
* Is this value within the elements of an array?
* @private
*/
const inArray = function (val, list) {
return list.includes(val);
};
/**
* Create an Error with a message relating to an invalid parameter.
*
* @param {string} name - parameter name.
* @param {string} expected - description of the type/value/range expected.
* @param {*} actual - the value received.
* @returns {Error} Containing the formatted message.
* @private
*/
const invalidParameterError = function (name, expected, actual) {
return new Error(
`Expected ${expected} for ${name} but received ${actual} of type ${typeof actual}`
);
};
/**
* Ensures an Error from C++ contains a JS stack.
*
* @param {Error} native - Error with message from C++.
* @param {Error} context - Error with stack from JS.
* @returns {Error} Error with message and stack.
* @private
*/
const nativeError = function (native, context) {
context.message = native.message;
return context;
};
module.exports = {
defined,
object,
plainObject,
fn,
bool,
buffer,
typedArray,
arrayBuffer,
string,
number,
integer,
inRange,
inArray,
invalidParameterError,
nativeError
};
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