The "-1" and "0" literals do not work

[araera111]

Bug description

I used ts-to-zod.
Errors occurred when used for types containing "-1" and "0" literals

Input

export interface bugType {
	flag_a: -1 | 0;
}

Expected output

export const bugTypeSchema = z.object({
　　flag_a: z.union([z.literal(-1), z.literal(0)])
});

Actual output

export const bugTypeSchema = z.object({
　　flag_a: z.union([z.-1(), z.literal(0)])
}); // error

Versions

• Typescript: v4.8.3
• Zod: v3.19.1