How to build and run from source?

Read the basics about extension authoring from Extending Visual Studio Code

• Read Build and Run VS Code from Source to get a local dev set up running for VS Code

• Open the extensions/emmet folder in the vscode repo in VS Code

• Press F5 to start debugging

Running tests

Tests for Emmet extension are run as integration tests as part of VS Code.

• Read Build and Run VS Code from Source to get a local dev set up running for VS Code

• Run ./scripts/test-integration.sh to run all the integrations tests that include the Emmet tests.