61 lines
2.2 KiB
JavaScript
61 lines
2.2 KiB
JavaScript
var baseGetTag = require('./_baseGetTag'),
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isLength = require('./isLength'),
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isObjectLike = require('./isObjectLike');
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/** `Object#toString` result references. */
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var argsTag = '[object Arguments]',
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arrayTag = '[object Array]',
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boolTag = '[object Boolean]',
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dateTag = '[object Date]',
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errorTag = '[object Error]',
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funcTag = '[object Function]',
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mapTag = '[object Map]',
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numberTag = '[object Number]',
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objectTag = '[object Object]',
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regexpTag = '[object RegExp]',
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setTag = '[object Set]',
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stringTag = '[object String]',
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weakMapTag = '[object WeakMap]';
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var arrayBufferTag = '[object ArrayBuffer]',
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dataViewTag = '[object DataView]',
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float32Tag = '[object Float32Array]',
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float64Tag = '[object Float64Array]',
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int8Tag = '[object Int8Array]',
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int16Tag = '[object Int16Array]',
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int32Tag = '[object Int32Array]',
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uint8Tag = '[object Uint8Array]',
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uint8ClampedTag = '[object Uint8ClampedArray]',
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uint16Tag = '[object Uint16Array]',
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uint32Tag = '[object Uint32Array]';
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/** Used to identify `toStringTag` values of typed arrays. */
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var typedArrayTags = {};
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typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
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typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
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typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
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typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
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typedArrayTags[uint32Tag] = true;
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typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
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typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
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typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =
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typedArrayTags[errorTag] = typedArrayTags[funcTag] =
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typedArrayTags[mapTag] = typedArrayTags[numberTag] =
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typedArrayTags[objectTag] = typedArrayTags[regexpTag] =
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typedArrayTags[setTag] = typedArrayTags[stringTag] =
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typedArrayTags[weakMapTag] = false;
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/**
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* The base implementation of `_.isTypedArray` without Node.js optimizations.
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*
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* @private
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
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*/
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function baseIsTypedArray(value) {
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return isObjectLike(value) &&
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isLength(value.length) && !!typedArrayTags[baseGetTag(value)];
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}
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module.exports = baseIsTypedArray;
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