为什么 Vue.js3 `npm run build` 会给出一堆错误: TS2304 “Cannot find name ‘foo’’” & TS2532“对象可能是‘未定义’”?
我使用 TypeScript 完成了一个 Vue.js3 项目。我用 Vue 做的最后一个项目是 Vue.js2,我有一个更简单的设置,没有 vue-tsc。
看来,如果我运行默认的 npm run build 命令,就会调用 vue-tsc --noEmit && vite build,我收到 53 个错误(各种文件中都有多个错误)。
这些错误在开发编译期间永远不会出现,并且在 VS 代码中看不到任何突出显示的问题。在尝试构建之后,我只看到大量错误(可能与我的 Typescript 设置有关?)。
我可以通过从命令中删除 vue-tsc --noEmit
并仅使用:vite build
来解决这个问题。但是,想知道我是否遗漏了任何内容或给我的项目带来任何潜在问题?
代码片段如下:
Vue 应用程序中的 build
配置 package.json
"scripts": {
"dev": "vite",
"build": "vue-tsc --noEmit && vite build",
"preview": "vite preview --port 5050",
"test:unit": "vitest --environment jsdom",
"test:e2e": "start-server-and-test preview http://127.0.0.1:5050/ 'cypress open'",
"test:e2e:ci": "start-server-and-test preview http://127.0.0.1:5050/ 'cypress run'",
"typecheck": "vue-tsc --noEmit -p tsconfig.vitest.json --composite false",
"lint": "eslint . --ext .vue,.js,.jsx,.cjs,.mjs,.ts,.tsx,.cts,.mts --fix --ignore-path .gitignore"
},
例如,
当我使用 vue-tsc 构建时看到的错误(显示 2)
44 v-model="user.password"
~~~~
src/components/Register.vue:44:18 - error TS2304: Cannot find name 'user'.
44 v-model="user.firstName"
~~~~
src/components/Login.vue:48:25 - error TS2532: Object is possibly 'undefined'.
...
...53 more :(
Register.vue 组件(上面错误标记的组件示例)
注意:同样,这里的 dev 编译没有错误。
<script lang="ts">
import RegisterButton from "./buttons/RegisterButton.vue";
import ValidationErrors from "./ValidationErrors.vue";
export default {
name: "RegisterUser",
components: {
RegisterButton,
ValidationErrors,
},
data() {
return {
user: {
firstName: "",
lastName: "",
email: "",
password: "",
},
errors: {},
};
},
methods: {
onValidationError(errors: Record<string, unknown>) {
let err = {};
for (const key in errors) {
const message = errors[key]["message"];
err[key] = message;
}
this.errors = err;
},
},
};
</script>
<template>
<div class="container-sm mt-3">
<h1 class="mb-4">Register a New User</h1>
<ValidationErrors :errors="errors" />
<!-- Registration Form -->
<div class="mb-3">
<input
type="text"
class="form-control form-control-lg"
placeholder="First Name"
v-model="user.firstName"
/>
</div>
<div class="mb-3">
<input
type="text"
class="form-control form-control-lg"
placeholder="Last Name"
v-model="user.lastName"
/>
</div>
<div class="mb-3">
<input
type="email"
class="form-control form-control-lg"
placeholder="Email"
v-model="user.email"
/>
</div>
<div class="mb-3">
<input
type="password"
class="form-control form-control-lg"
placeholder="Password"
v-model="user.password"
/>
</div>
<RegisterButton :user="this.user" @validationError="onValidationError" />
</div>
</template>
tsconfig.json 设置
{
"compilerOptions": {
"baseUrl": "./",
"paths": {
"@": ["src/*"],
"store/*": ["src/store/*"]
},
"module": "es2022",
"moduleResolution": "Node",
}
}
有人知道我可能缺少什么吗?我的 tsconfig.json 中可能存在错误或缺失的内容吗?
Tl;DR
运行构建命令为 vue-tsc --noEmit && vite build
抛出一堆在开发编译期间不存在的错误。如果我仅通过 vite build
构建,事情就可以了。但是,我是 vue-tsc 的新手,想知道我的设置是否不正确,或者是否缺少某些内容。
I finished a Vue.js3 project using TypeScript. The last project I did with Vue was Vue.js2, and I had a simpler setup without vue-tsc.
It appears that if I run the default npm run build
command, that calls vue-tsc --noEmit && vite build
, I get 53 errors (multiple in all sorts of files).
These errors are never present during dev compile, and don't see any problems highlighted in VS code. I only see the slough of errors (likely related to my Typescript setup?) following the build attempt.
I was able to work around it, by removing the vue-tsc --noEmit
from the command and only use: vite build
. However, wonder if I'm missing anything or causing me any potential problems with my project?
Code snippets below:
build
config in Vue app package.json
"scripts": {
"dev": "vite",
"build": "vue-tsc --noEmit && vite build",
"preview": "vite preview --port 5050",
"test:unit": "vitest --environment jsdom",
"test:e2e": "start-server-and-test preview http://127.0.0.1:5050/ 'cypress open'",
"test:e2e:ci": "start-server-and-test preview http://127.0.0.1:5050/ 'cypress run'",
"typecheck": "vue-tsc --noEmit -p tsconfig.vitest.json --composite false",
"lint": "eslint . --ext .vue,.js,.jsx,.cjs,.mjs,.ts,.tsx,.cts,.mts --fix --ignore-path .gitignore"
},
E.g,
Errors I see when I build with vue-tsc (2 shown)
44 v-model="user.password"
~~~~
src/components/Register.vue:44:18 - error TS2304: Cannot find name 'user'.
44 v-model="user.firstName"
~~~~
src/components/Login.vue:48:25 - error TS2532: Object is possibly 'undefined'.
...
...53 more :(
Register.vue
component (example of component flagged in error above)
NOTE: again, no errors on dev compile here.
<script lang="ts">
import RegisterButton from "./buttons/RegisterButton.vue";
import ValidationErrors from "./ValidationErrors.vue";
export default {
name: "RegisterUser",
components: {
RegisterButton,
ValidationErrors,
},
data() {
return {
user: {
firstName: "",
lastName: "",
email: "",
password: "",
},
errors: {},
};
},
methods: {
onValidationError(errors: Record<string, unknown>) {
let err = {};
for (const key in errors) {
const message = errors[key]["message"];
err[key] = message;
}
this.errors = err;
},
},
};
</script>
<template>
<div class="container-sm mt-3">
<h1 class="mb-4">Register a New User</h1>
<ValidationErrors :errors="errors" />
<!-- Registration Form -->
<div class="mb-3">
<input
type="text"
class="form-control form-control-lg"
placeholder="First Name"
v-model="user.firstName"
/>
</div>
<div class="mb-3">
<input
type="text"
class="form-control form-control-lg"
placeholder="Last Name"
v-model="user.lastName"
/>
</div>
<div class="mb-3">
<input
type="email"
class="form-control form-control-lg"
placeholder="Email"
v-model="user.email"
/>
</div>
<div class="mb-3">
<input
type="password"
class="form-control form-control-lg"
placeholder="Password"
v-model="user.password"
/>
</div>
<RegisterButton :user="this.user" @validationError="onValidationError" />
</div>
</template>
tsconfig.json setup
{
"compilerOptions": {
"baseUrl": "./",
"paths": {
"@": ["src/*"],
"store/*": ["src/store/*"]
},
"module": "es2022",
"moduleResolution": "Node",
}
}
Does anyone have an idea of what I might be missing? Might there be something incorrect or missing from my tsconfig.json
?
Tl;DR
Running build command as vue-tsc --noEmit && vite build
throws a bunch of errors that aren't present during dev compiles. If I build only via vite build
, things do work. However, I'm new to vue-tsc and wondering if my setup is incorrect, or if I'm missing something.
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我也发现了同样的问题,通过将
vue-tsc
版本升级到0.40.13
(最新版本)解决了I found the same problem, and solved it by upgrading the version of
vue-tsc
to0.40.13
(the latest version)从 package.json 的构建行中删除
vue-tsc --noEmit
后,它必须起作用。一定
适合我的情况我也有一个配置文件,所以:
it must work after you remove
vue-tsc --noEmit
from package.json's build line.must be
for my case I also have a config file so: