mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-26 06:34:20 +08:00
Chris Tate
67247dd26b
Readable, Writable, Duplex, Transform and PassThrough take the objectMode option, and a Duplex, Transform or PassThrough the readableObjectMode and writableObjectMode options, as true or false literals in an options object literal or in an options value. An object-mode side holds any value that converts to a checked-dynamic value: push, unshift, write, end, pipe, pipeline, for await, 'data' listeners, Readable.from and the transform callback carry values in TypeScript and JavaScript, and constructor-function streams and options held in variables do the same. The object-mode high-water mark counts values and defaults to 16. A readable buffer that mixes strings, Buffers and other values holds them all, and push(undefined) and other values on a byte-mode stream report ERR_INVALID_ARG_TYPE through 'error', as in Node. In typed code a write or transform callback, or a _write or _transform method, may declare its chunk with any such type, which converts when the callback runs. Writes pass the encoding argument to _write and _transform as Node does: undefined when absent, null when a callback took its place, otherwise the value unchanged. A parameter declared string | null | undefined receives that value and one declared string receives "" for undefined and null. write(chunk, encoding) on a byte-mode stream encodes a string chunk with any known encoding and throws ERR_UNKNOWN_ENCODING for an unknown one. Readable.from takes typed Maps and Sets of any such value, and arrays that mix strings and Buffers. for await over a readable-only stream that will emit 'close' now ends after 'close', as Node's eos does. Buffered writes that complete inside clearBuffer run their callbacks in order, and 'finish' waits for a deferred afterWrite that carries a callback, as Node's pendingcb does, unless a _final callback schedules it. The 'data' listener adapters take three slots and write and transform callbacks read their chunk and encoding through runtime accessors, so RUNTIME_ABI_VERSION is now 26.