{"id":119917,"date":"2024-09-23T15:43:09","date_gmt":"2024-09-23T13:43:09","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-javascript-platforme-bun-dobavlena-podderzhka-vyzova-koda-na-yazyke-si"},"modified":"2024-09-23T15:43:09","modified_gmt":"2024-09-23T13:43:09","slug":"v-javascript-platforme-bun-dobavlena-podderzhka-vyzova-koda-na-yazyke-si","status":"publish","type":"post","link":"https:\/\/prohoster.info\/en\/blog\/news\/v-javascript-platforme-bun-dobavlena-podderzhka-vyzova-koda-na-yazyke-si","title":{"rendered":"Support for calling C code has been added to the JavaScript platform Bun.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"
The Bun platform, developed as an alternative to Node.js for the isolated execution of applications written in JavaScript, JSX, and TypeScript, has introduced an experimental feature that allows the compilation and execution of handlers written in C. Previously, to call low-level code, developers had to either create N-API extensions or compile code into WebAssembly (WASM\/WASI) format, which complicated the development process and imposed certain limitations. Now, C code can be directly embedded into JavaScript and compiled on-the-fly using the TinyCC compiler, allowing for the dynamic linking of libraries. import { cc } from 'bun:ffi'; export const { symbols: { hello }, } = cc({ source: '.\/hello.c', symbols: { hello: { returns: 'void', args: [], }, }, }); hello(); <\/p>\n
To work with C, the bun:ffi layer is used, which compiles the source code into machine instructions, injects it into memory during execution, and provides automatic data type conversion between JavaScript and C. It is noted that the overhead for calling compiled C code has been minimized, resulting in a delay of about 2 nanoseconds for each call to external C functions. As an example, it is demonstrated how to directly access FFmpeg libraries for converting short videos\u2014by eliminating operations such as spawning a separate process and allocating memory for each video, the overall execution time of the test task using bun:ffi was reduced by three times. <\/p>\n
Moreover, in the Bun 1.1.29 release, support for N-API (napi) has been added for C code, allowing C-written handlers to return objects, strings, arrays, and other non-primitive JavaScript values, in addition to C types like int and float. The mechanism for calling C handlers also works when dynamically loading any libraries with C ABI, regardless of the original programming language (C++, Rust, Zig, etc.), allowing JavaScript code to call functions provided by these libraries without a separate rebuilding stage. For example, it is now possible to access system APIs from JavaScript. <\/p>\n
It is worth noting that the Bun project is being developed with the aim of ensuring compatibility with server applications written for Node.js and supports most of the Node.js API. The platform includes a set of tools for creating and running applications in JavaScript and TypeScript, as well as a runtime for executing JavaScript applications outside the browser, a package manager (compatible with NPM), testing tools, and a system for building self-sufficient packages. In terms of performance, Bun significantly outperforms Deno and Node.js (in tests based on the React framework, the Bun platform is twice as fast as Deno and almost five times faster than Node.js). The Bun code is written in Zig and C++ and is distributed under the MIT license. The JavaScriptCore engine and components from the WebKit project with additional patches are used for executing JavaScript. \n Source: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"