This micro-library (no dependencies) searches for occurrences of a given search term (string or Regex) in a Node.js stream, i.e. anything that emits data events with Buffers or strings.

import TextStreamSearch from "text-stream-search"

const streamSearch = new TextStreamSearch(myStream)

// wait until myStream contains "hello"
await streamSearch.waitForText("hello")

// capture data from the stream
const matchText = await streamSearch.waitForRegex("listening at port \\d+.")
// matchingText contains something like "listening at port 3000."

// access the captured stream content
const text = streamSearch.fullText()

For a working example see the end-to-end test.

• StreamSnitch: does the same thing with regular expressions, but is buggy and blocks the event queue

Please submit bugs, ideas, or improvements via an issue or pull request.

• run all tests: make test
• run unit tests: make unit
• run linters: make lint
• fix formatting issues: make lint
• see all available make commands: make help

• update the version in package.json and commit to main
• run npm publish