@astronautlabs/amf/dist.esm/float.js

Action Message Format (AMF0/3)

import { resolveLength } from "@astronautlabs/bitstream";
export class FloatSerializer {
    *read(reader, type, parent, field) {
        let length;
        try {
            length = resolveLength(field.length, parent, field);
        }
        catch (e) {
            throw new Error(`Failed to resolve length of number via 'length' determinant: ${e.message}`);
        }
        if (!reader.isAvailable(length))
            yield { remaining: length };
        if (length === 8) {
            return Buffer.from([reader.readSync(8)]).readFloatBE();
        }
        else if (length === 16) {
            return Buffer.from([reader.readSync(8), reader.readSync(8)]).readDoubleBE();
        }
        else {
            throw new Error(`FloatSerializer supports only 1-byte (8 bit) or 2-byte (16 bit) values`);
        }
    }
    write(writer, type, parent, field, value) {
        let length;
        try {
            length = resolveLength(field.length, parent, field);
        }
        catch (e) {
            throw new Error(`Failed to resolve length of number via 'length' determinant: ${e.message}`);
        }
        if (length === 8) {
            let buf = Buffer.alloc(1);
            buf.writeFloatBE(value);
            writer.write(8, buf[0]);
        }
        else if (length === 16) {
            let buf = Buffer.alloc(2);
            buf.writeDoubleBE(value);
            writer.write(8, buf[0]);
            writer.write(8, buf[1]);
        }
        else {
            throw new Error(`FloatSerializer supports only 1-byte (8 bit) or 2-byte (16 bit) values`);
        }
    }
}
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