@stdlib/assert-napi-is-typedarray

About stdlib...

We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.

The library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases.

When you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there.

To join us in bringing numerical computing to the web, get started by checking us out on GitHub, and please consider financially supporting stdlib. We greatly appreciate your continued support!

Assert Typed Array

Assert that a Node-API value is a typed array.

Installation

npm install @stdlib/assert-napi-is-typedarray

Usage

var headerDir = require( '@stdlib/assert-napi-is-typedarray' );

headerDir

Absolute file path for the directory containing header files for C APIs.

var dir = headerDir;
// returns <string>

Examples

var headerDir = require( '@stdlib/assert-napi-is-typedarray' );

console.log( headerDir );
// => <string>

---

C APIs

Usage

#include "stdlib/assert/napi/is_typedarray.h"

stdlib_assert_napi_value_is_typedarray( env, value, *message, *err )

Asserts that a Node-API value is a typed array.

#include "stdlib/assert/napi/is_typedarray.h"
#include <node_api.h>

static napi_value addon( napi_env env, napi_callback_info info ) {
    napi_value value;

    // ...

    napi_value err;
    napi_status status = stdlib_assert_napi_value_is_typedarray( env, value, "Must be a typed array.", &err );
    assert( status == napi_ok );
    if ( err != NULL ) {
        assert( napi_throw( env, err ) == napi_ok );
        return NULL;
    }

    // ...
}

The function accepts the following arguments:

• env: [in] napi_env environment under which the function is invoked.
• value: [in] napi_value Node-API value.
• message: [in] char* error message.
• err: [out] napi_value* pointer for storing a JavaScript error.

napi_status stdlib_assert_napi_value_is_typedarray( const napi_env env, const napi_value value, const char *message, napi_value *err );

The function returns a napi_status status code indicating success or failure (returns napi_ok if success).

Notes

• If not provided a typed array, the function sets err with a JavaScript error; otherwise, err is set to NULL.

---

Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

Community

---

License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.