@typescord/ftee

Ftee (Format Term External Erlang)

Ftee is a fast encoder and decoder for the Erlang External Term Format (version 131) written in TypeScript.

Note: the decoder does not check the lists' tail marker. If this is inconvenient, feel free to make an issue/PR.

Supported terms

• Atoms (decode-only)
• Booleans
• Strings
• Floats
• Integers
• Larges and smalls bigs
• Map (objects)
• Arrays
• Tuples (decode-only)
• "Strings" (via Buffer, larges buffers are encoded as lists.)

How to encode

const ftee = require('@typescord/ftee');

const packed = ftee.encode({ a: true, list: ['of', 3, 'things', 'to', 'pack'] });
console.log(packed);

How to decode

Note: LARGE_BIG_EXT or SMALL_BIG_EXT are decoded as strings (instead of bigints).

const ftee = require('@typescord/ftee');

const packed = Buffer.from('\u0083\u006d\u0000\u0000\u0000\u000bHello world', 'binary');
try {
	const unpacked = ftee.decode(packed);
	console.log(unpacked);
} catch (error) {
	console.error(error);
}