deno check
deno check 会对你的 TypeScript（或 JavaScript）代码进行类型检查，而不会运行它。
这在 CI 流水线中或部署前很有用，可以尽早发现类型错误。
有关 Deno 中的 TypeScript 的更多信息，请参阅
TypeScript 指南。
基本用法 Jump to heading
deno check main.ts
检查多个文件：
deno check src/server.ts src/utils.ts
对远程模块进行类型检查 Jump to heading
默认情况下，只会对本地模块进行类型检查。使用 --all 也可以对
远程依赖进行类型检查：
deno check --all main.ts
对 JavaScript 文件进行类型检查 Jump to heading
如果你有一个 JavaScript 项目，并且想在不为每个文件添加
// @ts-check 的情况下对其进行类型检查，请使用 --check-js 标志：
deno check --check-js main.js
在 CI 中使用 Jump to heading
如果存在类型错误，deno check 会以非零状态码退出，因此它适合用于 CI 流水线：
deno check main.ts && echo "Types OK"
请注意，deno test 和
deno bench 已经默认执行类型检查，因此如果你已经在运行测试，就不需要单独再执行 deno check 步骤。 当你想在不运行任何内容的情况下进行类型检查时，请使用 deno check——例如，作为 CI 中一个快速的前置步骤：
deno check main.ts
deno lint
deno test
deno check [OPTIONS] [file]...Download and type-check without execution.
deno check jsr:@std/http/file-server
Unless --reload is specified, this command will not re-download already cached dependencies
Dependency management options Jump to heading
--frozen<BOOLEAN>optionalError out if lockfile is out of date.
Load import map file from local file or remote URL.
--lock<FILE>optionalCheck the specified lock file. (If value is not provided, defaults to "./deno.lock").
--no-lockDisable auto discovery of the lock file.
--no-npmDo not resolve npm modules.
--no-remoteDo not resolve remote modules.
--node-modules-dir<MODE>optionalSets the node modules management mode for npm packages.
--reload, -r<CACHE_BLOCKLIST>optionalReload source code cache (recompile TypeScript) no value Reload everything jsr:@std/http/file-server,jsr:@std/assert/assert-equals Reloads specific modules npm: Reload all npm modules npm:chalk Reload specific npm module.
--vendor<vendor>optionalToggles local vendor folder usage for remote modules and a node_modules folder for npm packages.
Options Jump to heading
--allType-check all code, including remote modules and npm packages.
--allow-import, -I<IP_OR_HOSTNAME>optionalAllow importing from remote hosts. Optionally specify allowed IP addresses and host names, with ports as necessary. Default value: deno.land:443,jsr.io:443,esm.sh:443,raw.esm.sh:443,cdn.jsdelivr.net:443,raw.githubusercontent.com:443,gist.githubusercontent.com:443.
--cert<FILE>Load certificate authority from PEM encoded file.
--check-jsEnable type-checking of JavaScript files (equivalent to compilerOptions.checkJs: true).
--conditions<conditions>Use this argument to specify custom conditions for npm package exports. You can also use DENO_CONDITIONS env var. .
Configure different aspects of deno including TypeScript, linting, and code formatting.
Typically the configuration file will be called deno.json or deno.jsonc and
automatically detected; in that case this flag is not necessary.
--deny-import<IP_OR_HOSTNAME>optionalDeny importing from remote hosts. Optionally specify denied IP addresses and host names, with ports as necessary.
--docType-check code blocks in JSDoc as well as actual code.
--doc-onlyType-check code blocks in JSDoc and Markdown only.
--minimum-dependency-age<minimum-dependency-age>(Unstable) The age in minutes, ISO-8601 duration or RFC3339 absolute timestamp (e.g. '120' for two hours, 'P2D' for two days, '2025-09-16' for cutoff date, '2025-09-16T12:00:00+00:00' for cutoff time, '0' to disable).
--no-code-cacheDisable V8 code cache feature.
--no-configDisable automatic loading of the configuration file.
--v8-flags<V8_FLAGS>optionalTo see a list of all available flags use --v8-flags=--help
Flags can also be set via the DENO_V8_FLAGS environment variable.
Any flags set with this flag are appended after the DENO_V8_FLAGS environment variable.