29 lines
780 B
JavaScript
29 lines
780 B
JavaScript
'use strict';
|
|
|
|
var $TypeError = require('es-errors/type');
|
|
|
|
var IsDetachedBuffer = require('./IsDetachedBuffer');
|
|
var Type = require('./Type');
|
|
|
|
var isTypedArray = require('is-typed-array');
|
|
var typedArrayBuffer = require('typed-array-buffer');
|
|
|
|
// https://262.ecma-international.org/6.0/#sec-validatetypedarray
|
|
|
|
module.exports = function ValidateTypedArray(O) {
|
|
if (Type(O) !== 'Object') {
|
|
throw new $TypeError('Assertion failed: `O` must be an Object'); // step 1
|
|
}
|
|
if (!isTypedArray(O)) {
|
|
throw new $TypeError('Assertion failed: `O` must be a Typed Array'); // steps 2 - 3
|
|
}
|
|
|
|
var buffer = typedArrayBuffer(O); // step 4
|
|
|
|
if (IsDetachedBuffer(buffer)) {
|
|
throw new $TypeError('`O` must be backed by a non-detached buffer'); // step 5
|
|
}
|
|
|
|
return buffer; // step 6
|
|
};
|