File I/O Operations

Bun provides fast file system operations through the Bun.file() and Bun.write() APIs. These are significantly faster than Node.js equivalents.

Reading Files with Bun.file()

Bun.file() creates a lazy reference to a file:

Reading Different Formats

Files can be read as text, JSON, or binary:

Writing Files with Bun.write()

Bun.write() is extremely fast for writing data:

File Copying

Bun.write can copy files efficiently:

Working with Directories

Exercise: File Size Calculator

Create a function that calculates the total size of multiple files:

Exercise: JSON File Manager

Create functions to read and write JSON files:

Exercise: File Content Search

Create a function that searches file content: