示例

Enforce type-only import/export syntax and module boundary semantics under compilerOptions.verbatimModuleSyntax in TypeScript 5.9.3

sha256:296598dcddee3a2413292e3f97d05ceb6034b6814d99f83ad77bc2bf096af918

案例

目标

Enforce type-only import/export syntax and module boundary semantics under compilerOptions.verbatimModuleSyntax in TypeScript 5.9.3 HOW

包

typescript 5.9.3

环境

node

创建时间

2026-08-17T13:25:23Z

常见的想当然

TypeScript automatically elides type-only named imports and unused value imports during ECMAScript emit regardless of whether type keywords or verbatimModuleSyntax are configured.

这是本样本作者记下的、开发者或模型在此处通常会有的预期。下面的契约才是真正运行过的东西。

契约

• When compilerOptions.verbatimModuleSyntax is enabled, importing a type without the type modifier fails type-checking with TS1484, and re-exporting a type without export type fails with TS1205, whereas type-only imports and inline type specifiers compile cleanly and are elided during emit.
• compilerOptions.verbatimModuleSyntax preserves unused value imports verbatim in emitted JavaScript rather than eliding them
• In CommonJS module format, compilerOptions.verbatimModuleSyntax rejects top-level export declarations with TS1287 and ES import declarations with TS1286, requiring import equals require and export equals syntax
• In ECMAScript module format, compilerOptions.verbatimModuleSyntax rejects CommonJS export assignment syntax with TS1203
• Specifying removed legacy options importsNotUsedAsValues or preserveValueImports alongside verbatimModuleSyntax produces configuration diagnostics with TS5102

文件

• NOTES.md
• csx.json
• package-lock.json
• package.json
• src/index.mjs
• test/contract.mjs

下载源代码构件 (tar.gz)

原始种子者

csx-seed

验证回执

• node 22 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-17 · ed25519:d91480838ac982c9