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node_modules/es-abstract/2019/NumberToRawBytes.js

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+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+var hasOwnProperty = require('./HasOwnProperty');
+var ToInt16 = require('./ToInt16');
+var ToInt32 = require('./ToInt32');
+var ToInt8 = require('./ToInt8');
+var ToUint16 = require('./ToUint16');
+var ToUint32 = require('./ToUint32');
+var ToUint8 = require('./ToUint8');
+var ToUint8Clamp = require('./ToUint8Clamp');
+
+var valueToFloat32Bytes = require('../helpers/valueToFloat32Bytes');
+var valueToFloat64Bytes = require('../helpers/valueToFloat64Bytes');
+var integerToNBytes = require('../helpers/integerToNBytes');
+
+var keys = require('object-keys');
+
+// https://262.ecma-international.org/8.0/#table-50
+var TypeToSizes = {
+	__proto__: null,
+	Int8: 1,
+	Uint8: 1,
+	Uint8C: 1,
+	Int16: 2,
+	Uint16: 2,
+	Int32: 4,
+	Uint32: 4,
+	Float32: 4,
+	Float64: 8
+};
+
+var TypeToAO = {
+	__proto__: null,
+	Int8: ToInt8,
+	Uint8: ToUint8,
+	Uint8C: ToUint8Clamp,
+	Int16: ToInt16,
+	Uint16: ToUint16,
+	Int32: ToInt32,
+	Uint32: ToUint32
+};
+
+// https://262.ecma-international.org/8.0/#sec-numbertorawbytes
+
+module.exports = function NumberToRawBytes(type, value, isLittleEndian) {
+	if (typeof type !== 'string' || !hasOwnProperty(TypeToSizes, type)) {
+		throw new $TypeError('Assertion failed: `type` must be a TypedArray element type: ' + keys(TypeToSizes));
+	}
+	if (typeof value !== 'number') {
+		throw new $TypeError('Assertion failed: `value` must be a Number');
+	}
+	if (typeof isLittleEndian !== 'boolean') {
+		throw new $TypeError('Assertion failed: `isLittleEndian` must be a Boolean');
+	}
+
+	if (type === 'Float32') { // step 1
+		return valueToFloat32Bytes(value, isLittleEndian);
+	} else if (type === 'Float64') { // step 2
+		return valueToFloat64Bytes(value, isLittleEndian);
+	} // step 3
+
+	var n = TypeToSizes[type]; // step 3.a
+
+	var convOp = TypeToAO[type]; // step 3.b
+
+	var intValue = convOp(value); // step 3.c
+
+	return integerToNBytes(intValue, n, isLittleEndian); // step 3.d, 3.e, 4
+};