Memory Streams JS is a light-weight implementation of the
Stream.Writable abstract classes from node.js. You can use the classes provided to store the result of reading and writing streams in memory. This can be useful when you need pipe your test output for later inspection or to stream files from the web into memory without have to use temporary files on disk.
npm install memory-streams --save
Sample usage, using the
ReadableStream class and piping:
var streams = ;// Initialize with the stringvar reader = 'Hello World\n';// Send all output to stdoutreader; // outputs: "Hello World\n"// Add more data to the streamreader; // outputs "Hello Universe\n";
ReadableStream class and reading manually:
var streams = ;// Initialize with the stringvar reader = 'Hello World\n';// Add more data to the streamreader; // outputs "Hello Universe\n";// Read the data outconsole; // outputs: "Hello World\nHello Universe\n"
WritableStream class and piping the contents of a file:
var streams =fs = ;// Pipevar reader = fs;var writer = ;reader;reader;
You can also call the
write method directly to store data to the stream:
var streams = ;// Write methodvar writer = ;writer;// Output the content as a stringconsole; // Outputs: "Hello World\n"
For more examples you can look at the tests for the module.
Copyright (c) 2017 Paul Jackson
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