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| 1 | +/* |
| 2 | +* @license Apache-2.0 |
| 3 | +* |
| 4 | +* Copyright (c) 2021 The Stdlib Authors. |
| 5 | +* |
| 6 | +* Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | +* you may not use this file except in compliance with the License. |
| 8 | +* You may obtain a copy of the License at |
| 9 | +* |
| 10 | +* http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | +* |
| 12 | +* Unless required by applicable law or agreed to in writing, software |
| 13 | +* distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | +* See the License for the specific language governing permissions and |
| 16 | +* limitations under the License. |
| 17 | +*/ |
| 18 | + |
| 19 | +// TypeScript Version: 2.0 |
| 20 | + |
| 21 | +import ARCH = require( '@stdlib/os/arch' ); |
| 22 | +import BYTE_ORDER = require( '@stdlib/os/byte-order' ); |
| 23 | +import configdir = require( '@stdlib/os/configdir' ); |
| 24 | +import FLOAT_WORD_ORDER = require( '@stdlib/os/float-word-order' ); |
| 25 | +import homedir = require( '@stdlib/os/homedir' ); |
| 26 | +import NUM_CPUS = require( '@stdlib/os/num-cpus' ); |
| 27 | +import PLATFORM = require( '@stdlib/os/platform' ); |
| 28 | +import tmpdir = require( '@stdlib/os/tmpdir' ); |
| 29 | + |
| 30 | +/** |
| 31 | +* Interface describing the `os` namespace. |
| 32 | +*/ |
| 33 | +interface OS { |
| 34 | + /** |
| 35 | + * Operating system CPU architecture. |
| 36 | + * |
| 37 | + * ## Notes |
| 38 | + * |
| 39 | + * Current possible values: |
| 40 | + * |
| 41 | + * - arm |
| 42 | + * - arm64 |
| 43 | + * - ia32 |
| 44 | + * - mips |
| 45 | + * - mipsel |
| 46 | + * - ppc |
| 47 | + * - ppc64 |
| 48 | + * - s390 |
| 49 | + * - s390x |
| 50 | + * - x32 |
| 51 | + * - x64 |
| 52 | + * |
| 53 | + * @example |
| 54 | + * if ( ARCH === 'arm' || ARCH === 'arm64' ) { |
| 55 | + * console.log( 'Running on ARM...' ); |
| 56 | + * } else { |
| 57 | + * console.log( 'Running on something else...' ); |
| 58 | + * } |
| 59 | + */ |
| 60 | + ARCH: typeof ARCH; |
| 61 | + |
| 62 | + /** |
| 63 | + * Platform byte order. |
| 64 | + * |
| 65 | + * ## Notes |
| 66 | + * |
| 67 | + * Possible values: |
| 68 | + * |
| 69 | + * - `'little-endian'` |
| 70 | + * - `'big-endian'` |
| 71 | + * - `'mixed-endian'` |
| 72 | + * - `'unknown'` |
| 73 | + * |
| 74 | + * @example |
| 75 | + * if ( BYTE_ORDER === 'little-endian' ) { |
| 76 | + * console.log( 'Least significant byte comes first...' ); |
| 77 | + * } else if ( BYTE_ORDER === 'big-endian' ) { |
| 78 | + * console.log( 'Most significant byte comes first...' ); |
| 79 | + * } else { |
| 80 | + * console.log( 'This is uncommon...' ); |
| 81 | + * } |
| 82 | + */ |
| 83 | + BYTE_ORDER: typeof BYTE_ORDER; |
| 84 | + |
| 85 | + /** |
| 86 | + * Returns a directory for user-specific configuration files. |
| 87 | + * |
| 88 | + * ## Notes |
| 89 | + * |
| 90 | + * - On Windows platforms, the function first checks for a `LOCALAPPDATA` environment variable before checking for an `APPDATA` environment variable. This means that machine specific user configuration files have precedence over roaming user configuration files. |
| 91 | + * - On non-Windows platforms, if the function is unable to locate the current user's `home` directory, the function returns `null`. Similarly, on Windows platforms, if the function is unable to locate an application data directory, the function also returns `null`. |
| 92 | + * |
| 93 | + * @param [p] - path to append to a base directory |
| 94 | + * @returns directory |
| 95 | + * |
| 96 | + * @example |
| 97 | + * var dir = configdir(); |
| 98 | + * // e.g., returns '/Users/<username>/Library/Preferences' |
| 99 | + * |
| 100 | + * @example |
| 101 | + * var dir = configdir( 'appname/config' ); |
| 102 | + * // e.g., returns '/Users/<username>/Library/Preferences/appname/config' |
| 103 | + */ |
| 104 | + configdir: typeof configdir; |
| 105 | + |
| 106 | + /** |
| 107 | + * Platform float word order. |
| 108 | + * |
| 109 | + * ## Notes |
| 110 | + * |
| 111 | + * Possible values: |
| 112 | + * |
| 113 | + * - `'little-endian'` |
| 114 | + * - `'big-endian'` |
| 115 | + * - `'unknown'` |
| 116 | + * |
| 117 | + * @example |
| 118 | + * if ( FLOAT_WORD_ORDER === 'little-endian' ) { |
| 119 | + * console.log( 'Least significant word comes first...' ); |
| 120 | + * } else if ( FLOAT_WORD_ORDER === 'big-endian' ) { |
| 121 | + * console.log( 'Most significant word comes first...' ); |
| 122 | + * } else { |
| 123 | + * console.log( 'Unknown...' ); |
| 124 | + * } |
| 125 | + */ |
| 126 | + FLOAT_WORD_ORDER: typeof FLOAT_WORD_ORDER; |
| 127 | + |
| 128 | + /** |
| 129 | + * Returns the current user's home directory. |
| 130 | + * |
| 131 | + * ## Notes |
| 132 | + * |
| 133 | + * - If unable to locate a home directory, the function returns `null`. |
| 134 | + * |
| 135 | + * @returns home directory |
| 136 | + * |
| 137 | + * @example |
| 138 | + * var home = homedir(); |
| 139 | + * // e.g., returns '/Users/<username>' |
| 140 | + */ |
| 141 | + homedir: typeof homedir; |
| 142 | + |
| 143 | + /** |
| 144 | + * Number of CPUs. |
| 145 | + * |
| 146 | + * ## Notes |
| 147 | + * |
| 148 | + * - In browser environments, the number of CPUs is determined by querying the hardware concurrency API. |
| 149 | + * - In Node.js environments, the number of CPUs is determined via the `os` module. |
| 150 | + * |
| 151 | + * @example |
| 152 | + * var num = NUM_CPUS; |
| 153 | + * // returns <number> |
| 154 | + */ |
| 155 | + NUM_CPUS: typeof NUM_CPUS; |
| 156 | + |
| 157 | + /** |
| 158 | + * Platform on which the current process is running. |
| 159 | + * |
| 160 | + * ## Notes |
| 161 | + * |
| 162 | + * Possible values: |
| 163 | + * |
| 164 | + * - `'win32'` |
| 165 | + * - `'darwin'` |
| 166 | + * - `'linux'` |
| 167 | + * - `'freebsd'` |
| 168 | + * - `'sunos'` |
| 169 | + * |
| 170 | + * @example |
| 171 | + * if ( PLATFORM === 'win32' ) { |
| 172 | + * console.log( 'Running on a PC...' ); |
| 173 | + * } else if ( PLATFORM === 'darwin' ) { |
| 174 | + * console.log( 'Running on a Mac...' ); |
| 175 | + * } else { |
| 176 | + * console.log( 'Running on something else...' ); |
| 177 | + * } |
| 178 | + */ |
| 179 | + PLATFORM: typeof PLATFORM; |
| 180 | + |
| 181 | + /** |
| 182 | + * Returns the directory for storing temporary files. |
| 183 | + * |
| 184 | + * @returns directory for temporary files |
| 185 | + * |
| 186 | + * @example |
| 187 | + * var dir = tmpdir(); |
| 188 | + * // e.g., returns '/path/to/temporary/files/directory' |
| 189 | + */ |
| 190 | + tmpdir: typeof tmpdir; |
| 191 | +} |
| 192 | + |
| 193 | +/** |
| 194 | +* Standard library OS utilities. |
| 195 | +*/ |
| 196 | +declare var os: OS; |
| 197 | + |
| 198 | + |
| 199 | +// EXPORTS // |
| 200 | + |
| 201 | +export = os; |
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