allow ErrorOpts as first arg for no-param errors#4
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For errors without template params, `new Err({ cause })` is now a
valid shorthand for `new Err(undefined, { cause })`. Parameterized
errors are unaffected — their first object arg is still treated as
params.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Brings in non-string template parameter support (inspect utility, updated types, and tests) from main. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
new Err({ cause })is now a valid shorthand fornew Err(undefined, { cause })new (opts: ErrorOpts)TypeScript overload to the no-params constructor branchTest plan
{ cause }as first arg, falsy cause,{ cause: undefined }, empty{}, parameterized errors unaffected, existing signatures still work, cause non-enumerabletsdtype tests: ErrorOpts compiles for no-param errors,expectErrorfor parameterized errorsnpm testpasses (both runtime and type tests)🤖 Generated with Claude Code