@cloudpss/ubjson/dist/stream/index.js

Opinionated UBJSON encoder/decoder for CloudPSS.

import { EncodeTransformer } from './encoder.js';
import { DecodeTransformer } from './decoder.js';
export { UnexpectedEofError as UnexpectedEof } from '../helper/errors.js';
/** 编码为 UBJSON */
export function encode(value, options) {
    if (value == null) {
        return new ReadableStream({
            type: 'bytes',
            start(controller) {
                const data = new Uint8Array([value === null ? 90 /* constants.NULL */ : 78 /* constants.NO_OP */]);
                controller.enqueue(data);
                controller.close();
            },
        });
    }
    return new ReadableStream({
        start(controller) {
            controller.enqueue(value);
            controller.close();
        },
    }).pipeThrough(encoder(options));
}
/** 编码为 UBJSON */
export function encodeMany(value, options) {
    return new ReadableStream({
        async start(controller) {
            for await (const v of value) {
                if (v == null)
                    controller.enqueue(undefined);
                else
                    controller.enqueue(v);
            }
            controller.close();
        },
    }).pipeThrough(encoder(options));
}
/** 编码为 UBJSON */
export function encoder(options) {
    return new TransformStream(new EncodeTransformer(options));
}
/** 解码 UBJSON */
export async function decode(stream, options) {
    const s = stream.pipeThrough(decoder(options));
    const r = s.getReader();
    const result = await r.read();
    void r.cancel();
    return result.done ? undefined : result.value;
}
/** 解码 UBJSON */
export async function* decodeMany(stream, options) {
    const s = stream.pipeThrough(decoder(options));
    const r = s.getReader();
    for (;;) {
        const { done, value } = await r.read();
        if (done)
            break;
        yield value;
    }
}
/** 解码 UBJSON */
export function decoder(options) {
    return new TransformStream(new DecodeTransformer(options));
}
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