function
ffi.linkSymbols
symbols: Fns
Link a map of symbols to JavaScript functions
Use this for native libraries that are already loaded, for example by Node-API, to skip loading them a second time. You usually want dlopen instead.
@param symbols
Map of symbols to load where the key is the symbol name and the value is the FFIFunction
import { linkSymbols } from "bun:ffi";
const [majorPtr, minorPtr, patchPtr] = getVersionPtrs();
const lib = linkSymbols({
// Unlike with dlopen(), the names here can be whatever you want
getMajor: {
returns: "cstring",
args: [],
// Since this doesn't use dlsym(), you have to provide a valid ptr
// That ptr could be a number or a bigint
// An invalid pointer will crash your program.
ptr: majorPtr,
},
getMinor: {
returns: "cstring",
args: [],
ptr: minorPtr,
},
getPatch: {
returns: "cstring",
args: [],
ptr: patchPtr,
},
});
const [major, minor, patch] = [
lib.symbols.getMajor(),
lib.symbols.getMinor(),
lib.symbols.getPatch(),
];