0d073fa89e
- Add GETTING_STARTED.md with quick start guide and development modes - Add INSTALL.sh automated installation script - Add INSTALLATION_CHECKLIST.md, INSTALLATION_SUCCESS.md, and INSTALLATION_SUMMARY.md - Add QUICK_REFERENCE.md for common commands - Add SETUP_GUIDE.md with detailed setup instructions - Update README.md with improved project overview - Add did-wallet app dependencies and node_modules
107 lines
2.1 KiB
JavaScript
107 lines
2.1 KiB
JavaScript
// This is an unfortunate replacement for @sindresorhus/is that we need to
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// re-implement for performance purposes. In particular the is.observable()
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// check is expensive, and unnecessary for our purposes. The values returned
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// are compatible with @sindresorhus/is, however.
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const typeofs = [
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'string',
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'number',
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'bigint',
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'symbol'
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]
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const objectTypeNames = [
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'Function',
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'Generator',
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'AsyncGenerator',
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'GeneratorFunction',
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'AsyncGeneratorFunction',
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'AsyncFunction',
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'Observable',
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'Array',
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'Buffer',
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'Object',
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'RegExp',
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'Date',
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'Error',
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'Map',
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'Set',
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'WeakMap',
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'WeakSet',
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'ArrayBuffer',
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'SharedArrayBuffer',
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'DataView',
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'Promise',
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'URL',
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'HTMLElement',
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'Int8Array',
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'Uint8Array',
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'Uint8ClampedArray',
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'Int16Array',
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'Uint16Array',
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'Int32Array',
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'Uint32Array',
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'Float32Array',
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'Float64Array',
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'BigInt64Array',
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'BigUint64Array'
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]
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/**
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* @param {any} value
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* @returns {string}
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*/
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export function is (value) {
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if (value === null) {
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return 'null'
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}
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if (value === undefined) {
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return 'undefined'
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}
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if (value === true || value === false) {
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return 'boolean'
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}
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const typeOf = typeof value
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if (typeofs.includes(typeOf)) {
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return typeOf
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}
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/* c8 ignore next 4 */
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// not going to bother testing this, it's not going to be valid anyway
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if (typeOf === 'function') {
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return 'Function'
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}
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if (Array.isArray(value)) {
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return 'Array'
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}
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if (isBuffer(value)) {
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return 'Buffer'
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}
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const objectType = getObjectType(value)
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if (objectType) {
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return objectType
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}
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/* c8 ignore next */
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return 'Object'
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}
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/**
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* @param {any} value
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* @returns {boolean}
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*/
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function isBuffer (value) {
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return value && value.constructor && value.constructor.isBuffer && value.constructor.isBuffer.call(null, value)
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}
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/**
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* @param {any} value
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* @returns {string|undefined}
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*/
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function getObjectType (value) {
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const objectTypeName = Object.prototype.toString.call(value).slice(8, -1)
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if (objectTypeNames.includes(objectTypeName)) {
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return objectTypeName
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}
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/* c8 ignore next */
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return undefined
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}
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