npm / tstyche

tstyche

What changed in tstyche 5 to 7, from its official release notes, upgrade guides and advisories. Sources checked 2026-10-21.

31 breaking1 deprecations16 new APIs and options8 behavior and defaults15 fixes and other

See which of these apply to your code, ranked, in your agent:

npx @unstale/cli init

tstyche 728 changes

The experimental when() helper was removed.
7.1.0release notes
The addsText() component is renamed.
7.0.0release notes
Cli#run() now returns an exit code.
7.0.0release notes
Removes the rootPath configuration option.
7.0.0release notes
Passing type arguments to the .toAcceptProps() matcher is disallowed.
7.0.0release notes
Renames the tsconfig configuration option ignore to baseline.
7.0.0release notes
Incompatible TSConfig options are now reported.
7.0.0release notes
Renames the tstyche/tstyche entry point to tstyche/api.
7.0.0release notes
The default configuration file location changes to ./tstyche.json.
7.0.0release notes
The usesText() component is renamed.
7.0.0release notes
Removes verbatimModuleSyntax from the default compiler options.
7.0.0release notes

Adds retry logic for fetch requests.
7.2.0release notes
Test files are always sorted by name in watch mode.
7.2.0release notes
Type-structure checking now ignores the order of index signatures.
7.0.0release notes
Checking now includes @ts-expect-error directives in multi-line comments.
7.0.0release notes
The tsconfig configuration accepts a JSON string.
7.0.0release notes

Unused type parameters are ignored when comparing type references.
7.2.5release notes
Prevents infinite recursion when comparing self-referential generic types.
7.2.4release notes
Handles reduced types when comparing type structures, improving type comparison behavior.
7.2.3release notes
Uses TypeScript v6 when v7 is installed.
7.2.2release notes
Improves validation of arguments passed to the matcher.
7.2.1release notes
Validates the JSX setup for the matcher.
7.2.1release notes
Fixes argument length detection for this matcher.
7.2.0release notes

Node.js 20 is no longer supported, so developers must use a supported Node.js version.
6.0.0release notes
The matcher now uses structure comparison, changing how .toBe() compares values.
6.0.0release notes
Support for TSTyche plugins has been removed, affecting projects that rely on plugins.
6.0.0release notes
TypeScript versions 5.3 and earlier are no longer supported.
6.0.0release notes

Type structure checking now ignores unused type parameters in call signatures.
6.0.3release notes

Type structure checking now takes predicate parameter position into account.
6.0.3release notes
Deduplicates complex unions and intersections when checking type structure.
6.0.2release notes
Type structure checking now compares the target type of type references.
6.0.1release notes

Adds the checkDeclarationFiles configuration option.
5.0.0release notes
Reports counts of checked suppressed errors.
5.0.0release notes
Adds the It member to TestTreeNodeBrand.
5.0.0release notes
Adds a matcher for testing whether provided types are callable with given arguments.
5.0.0release notes
Adds a matcher for testing whether provided types are constructable with given arguments.
5.0.0release notes
Adds a directive for marking fixme cases.
5.0.0release notes