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- 'use strict';
- var $TypeError = require('es-errors/type');
- var hasOwnProperty = require('./HasOwnProperty');
- var ToBigInt64 = require('./ToBigInt64');
- var ToBigUint64 = require('./ToBigUint64');
- 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 valueToFloat16Bytes = require('../helpers/valueToFloat16Bytes');
- var valueToFloat32Bytes = require('../helpers/valueToFloat32Bytes');
- var valueToFloat64Bytes = require('../helpers/valueToFloat64Bytes');
- var integerToNBytes = require('../helpers/integerToNBytes');
- var tableTAO = require('./tables/typed-array-objects');
- // https://262.ecma-international.org/15.0/#table-the-typedarray-constructors
- var TypeToAO = {
- __proto__: null,
- $INT8: ToInt8,
- $UINT8: ToUint8,
- $UINT8C: ToUint8Clamp,
- $INT16: ToInt16,
- $UINT16: ToUint16,
- $INT32: ToInt32,
- $UINT32: ToUint32,
- $BIGINT64: ToBigInt64,
- $BIGUINT64: ToBigUint64
- };
- // https://262.ecma-international.org/16.0/#sec-numerictorawbytes
- module.exports = function NumericToRawBytes(type, value, isLittleEndian) {
- if (typeof type !== 'string' || !hasOwnProperty(tableTAO.size, '$' + type)) {
- throw new $TypeError('Assertion failed: `type` must be a TypedArray element type');
- }
- if (typeof value !== 'number' && typeof value !== 'bigint') {
- throw new $TypeError('Assertion failed: `value` must be a Number or a BigInt');
- }
- if (typeof isLittleEndian !== 'boolean') {
- throw new $TypeError('Assertion failed: `isLittleEndian` must be a Boolean');
- }
- if (type === 'FLOAT16') { // step 1
- return valueToFloat16Bytes(value, isLittleEndian);
- } else if (type === 'FLOAT32') { // step 2
- return valueToFloat32Bytes(value, isLittleEndian);
- } else if (type === 'FLOAT64') { // step 3
- return valueToFloat64Bytes(value, isLittleEndian);
- } // step 4
- var n = tableTAO.size['$' + type]; // step 4.a
- var convOp = TypeToAO['$' + type]; // step 4.b
- var intValue = convOp(value); // step 4.c
- return integerToNBytes(intValue, n, isLittleEndian); // step 4.d, 4.e, 5
- };
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