ffi.d.ts
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ffi.d.ts
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	declare module 'ant:ffi' {
	interface FFITypeConstants {
	void: 'void';
	int8: 'int8';
	int16: 'int16';
	int: 'int';
	int64: 'int64';
	uint8: 'uint8';
	uint16: 'uint16';
	uint64: 'uint64';
	float: 'float';
	double: 'double';
	pointer: 'pointer';
	string: 'string';
	spread: '...';
	}

	type FFIType = FFITypeConstants[keyof FFITypeConstants];

	interface FunctionSignature {
	returns: FFIType;
	args: FFIType[];
	}

	interface FFILibrary {
	define(name: string, signature: FunctionSignature \| [FFIType, FFIType[]]): void;
	call(name: string, ...args: unknown[]): unknown;
	}

	const suffix: 'dylib' \| 'so' \| 'dll';
	const FFIType: FFITypeConstants;

	function alloc(size: number): number;
	function free(ptr: number): void;
	function read(ptr: number, size: number, type?: FFIType): unknown;
	function write(ptr: number, value: unknown, type?: FFIType): void;
	function pointer(value: unknown): number;
	function freeCallback(ptr: number): void;
	function readPtr(ptr: number): number;

	function callback(signature: FunctionSignature \| [FFIType, FFIType[]], fn: (...args: unknown[]) => unknown): number;
	function dlopen<T extends object = {}>(libraryPath: string): FFILibrary & T;
	}