fix: builder.writeInt(0, 1); // value is not zero or -1 for 1 bits. Got 0

[stels-cs]

This code will throw an error, but should work

let builder = new BitBuilder();
builder.writeInt(0, 1); // value is not zero or -1 for 1 bits. Got 0

The error occurs because the variable value is checked on line 155 instead of v from line 148.
value can be a number or a BigInt, so comparing it with BigInt constants will not work.

ton-core/src/boc/BitBuilder.ts

Lines 147 to 160 in 00fa47e

	writeInt(value: bigint | number, bits: number) {
	let v = BigInt(value);
	if (bits < 0 || !Number.isSafeInteger(bits)) {
	throw Error(`invalid bit length. Got ${bits}`);
	}
	// Corner case for zero bits
	if (bits === 0) {
	if (value !== 0n) {
	throw Error(`value is not zero for ${bits} bits. Got ${value}`);
	} else {
	return;
	}
	}

Same problem with

builder.writeInt(0, 0);
builder.writeInt(-1, 1);