fix: CJS default-export interop, doc corrections, and agent skills - #140
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require() on the CJS build of a locale, numeral, or timezone module lost
the ability to be used as the value it exports once terser/esbuild's
default-export handling flattened module.exports.default onto
module.exports itself. Add a renderChunk plugin that re-defines
module.exports.default to point back at module.exports so both
require('...') and require('...').default keep working, and generate a
matching .d.cts with `export =` via a dts renderChunk plugin so the
CommonJS types line up.
Also wire tests/build into prepublishOnly so a broken interop or
missing .d.cts fails the build before publish.
- Aug 23, 2025 is a Saturday, not a Friday; correct the day-of-week shown in parse() example outputs across parse.md and quick-start.md, and likewise Aug 23, 1970 (a Sunday, not a Saturday). Drop the now-redundant ignoreCase example that duplicated the corrected one. - Fix the escaped-bracket example in format.md: the closing bracket was escaped in the wrong position (`...]\\` instead of `...\\]`). - Fix the plugin import example in installation.mdx: plugins export a named `formatter` (and `parser`), not a default export, and the microsecond plugin was replaced by zonename to match its actual token in the example.
Add two self-contained Agent Skills for AI coding agents: `date-and-time` covers writing v4 code (formatting, parsing, timezones, locales, plugins, date arithmetic, durations), and `date-and-time-migration` covers migrating a project from v3 to v4. Either can be installed on its own via `npx skills add` and neither depends on `docs/`. Document them in the README with install instructions (skills CLI and manual copy) and a pointer from the v3->v4 migration section.
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Summary
.d.ctsoutput and a build-time testdate-and-timeanddate-and-time-migrationAgent Skills, linked from the README