refactor: align architecture with unstorage pattern

[productdevbook]

Summary

• Refactored provider architecture to match unstorage patterns
• Switched from zero-dependency implementations to optional peer dependencies
• Removed FeatureFlags from Provider interface for cleaner API

Changes

External Libraries as Peer Dependencies

Provider	Package	Required
SMTP	nodemailer	pnpm add nodemailer
Resend	resend	pnpm add resend
AWS SES	@aws-sdk/client-ses	pnpm add @aws-sdk/client-ses
HTTP	ofetch	pnpm add ofetch
Zeptomail	-	No external deps

Architecture Alignment

src/
├── _providers.ts          # Auto-generated metadata
├── email.ts               # Core module (like storage.ts)
├── index.ts
├── types.ts
├── utils.ts
└── providers/
    ├── utils/index.ts     # defineProvider, createError
    ├── aws-ses.ts         # Flat provider files
    ├── http.ts
    ├── resend.ts
    ├── smtp.ts
    └── zeptomail.ts

Test Updates

• Updated all tests to mock external libraries using vi.hoisted()
• Removed FeatureFlags related tests

Test plan

• All 100 tests pass
• Build succeeds (52.36 kB)
• Type check passes
• Lint passes

🤖 Generated with Claude Code

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/productdevbook/unemail@22

commit: f8ad5f2

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	@​types/​nodemailer@​7.0.5
	ofetch@​2.0.0-alpha.3
	nodemailer@​7.0.12
	zeptomail@​7.0.0
	@​aws-sdk/​client-ses@​3.972.0
	resend@​6.8.0

View full report

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	63.79%	363 / 569
🔵	Statements	63.9%	370 / 579
🔵	Functions	65.62%	63 / 96
🔵	Branches	56.5%	226 / 400

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
src/_providers.ts	100%	100%	100%	100%
src/types.ts	100%	100%	100%	100%
src/providers/aws-ses.ts	95.6%	86.66%	100%	95.55%	83, 92, 139, 147-151
src/providers/http.ts	94.36%	89.47%	90.9%	94.36%	92, 117, 125-129, 229
src/providers/resend.ts	95.89%	86.44%	100%	95.77%	66, 94, 252-259
src/providers/smtp.ts	92.64%	71.42%	90.9%	92.53%	95, 99, 172, 210-215, 220-223
src/providers/zeptomail.ts	0%	0%	0%	0%	27-224
src/providers/utils/index.ts	11.11%	0%	25%	11.11%	56-77

Generated in workflow #73 for commit f8ad5f2 by the Vitest Coverage Report Action