m3u8parse/lib/attr-serialize.js

Structural parsing of Apple HTTP Live Streaming .m3u8 format

import { Attr } from './attr-types.js';
const serialize = {
    [Attr.BigInt](value) {
        return BigInt(value).toString(10);
    },
    [Attr.HexInt](value) {
        return '0x' + BigInt(value).toString(16);
    },
    [Attr.Int](value) {
        return serialize[Attr.BigInt](value);
    },
    [Attr.HexNo](value) {
        return serialize[Attr.HexInt](value);
    },
    [Attr.Float](value) {
        return value.toString();
    },
    [Attr.SignedFloat](value) {
        return value.toString();
    },
    [Attr.String](value) {
        return `"${value}"`;
    },
    [Attr.Enum](value) {
        return value.toString();
    },
    [Attr.List](value) {
        try {
            return serialize[Attr.String]([...value].join(','));
        }
        catch (err) {
            return '"<INVALID INPUT>"';
        }
    },
    [Attr.Resolution](value) {
        // eslint-disable-next-line @typescript-eslint/no-non-null-asserted-optional-chain
        return '' + Math.floor(value?.width) + 'x' + Math.floor(value?.height);
    },
    [Attr.Byterange](value) {
        const base = `"${Math.floor(value?.length ?? 0)}`;
        return base + (value?.offset === undefined ? '"' : `@${Math.floor(value.offset)}"`);
    }
};
export default serialize;