Development

Dependencies

Jazzer.js has the following dependencies when built from source:

• Node.js 16
• NPM 7.0
• cmake-js dependencies
  • CMake version 3.10 or later
  • C/C++ compiler toolchain of the used platform
    • See cmake-js installation documentation

Build

To build the project execute install and build in the root directory.

npm install
npm run build

This takes care of downloading all dependencies, compiling the TypeScript code and building libFuzzer via cmake-js.

Test

All tests can be executed via the test npm script in the root directory. Please make sure that you build the newest version with the commands mentioned above.

npm run test

This executes all Jest unit tests and also all test scripts in the workspaces, plus a dryRun of all example projects.

Note: Please make sure to provide test cases for all code changes.

Format and lint

All code and documentation have to satisfy format and linting rules. This is enforced through a git pre-commit hook. The check npm script in the root directory runs the appropriate checks.

npm run check

fix will try to resolve found issues automatically for you.

npm run fix

Structure

Jazzer.js is mostly developed using TypeScript, for example higher-level parts and the code instrumentation. The lower-lever Node.js addon providing the libFuzzer integration is created using C++.

TypeScript is globally set up on root level and compiled into dist folders in the individual workspaces. On the other hand C++ is only used in the fuzzer workspace and compiled using cmake-js. More information on that part can be found in the workspace readme.