Glossary

Heft

Heft is the build system that SharePoint Framework uses from version 1.22 onwards, replacing gulp. It compiles, bundles and packages an SPFx solution into an .sppkg file.

The change matters to anyone maintaining older solutions: project setups written around gulp tasks stop working on upgrade, and the migration is not automatic.

It is a good illustration of the real cost of bespoke SPFx development. The build system changing is unpaid work landing on every solution ever delivered, on a schedule set by Microsoft.

All terms