@jbrowse/mobx-state-tree

Fork of mobx-state-tree v5.4.2 for use in jbrowse

Current list of changes

• updated typescript
• updated to import actual filepaths instead of node module resolution
• reduced rollup config
• tried tsdown but builds were very slow for some reason
• removed process.env.NODE_ENV from code, instead exporting a setDevMode function
• converted tests to vitest
• remove unused dependencies
• updated tslint to eslint and typescript-eslint
• attempted to make it a dual CJS/'pure ESM' package but did not work quite yet, using main (CJS) and module (ESM-ish) fields for now since dual build causes trouble with both being imported in vite
• added types.resilient - wraps a type so that instantiation errors are caught and a fallback type is used instead of crashing the entire state tree. This is useful for arrays or maps that may contain unknown or invalid entries (e.g. plugin types that are not installed). It takes a primary type, a fallback type, and a createFallbackSnapshot callback that receives the error and original snapshot. Note: isValidSnapshot always returns success for resilient types, meaning any value is considered a valid snapshot. Validation is deferred to instantiation time, where failures are caught and routed to the fallback