Import in body of module reorder to top import first năm 2024

Question

- 문제 발견

Nội dung chính Show

black girl！

import의 하는 부분 중 Compotent만 따로 분류해서 주석을 달아주려고했다.

정리 후에 구동을 시키는데

위와 같은 에러가 출력되었다.

- 문제 해결

import './App.css';
import { Navbar,Nav} from 'react-bootstrap';
import { Route, Switch } from 'react-router';
import { useState } from 'react';
import Mainpage from "./Compontent/mainpage.js";
import Login from './Compontent/login.js';
import SignUp from "./Compontent/sign_up.js";
import Search from "./Compontent/tach-search";

위와 같이 라이브러리에서 가져오는 데이터들을 가장 상단에 위치하게 하고

그아래에 Component를 배치했다.

아마도 가져오는 순서가 있는 듯 하다..

黑使

black girl！

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vue项目中又一个格式不规范导致的报错，真心累~~

以下报错是因为我将use组件放在了import组件的上边，应该放在所有import下边。

import in body of module; reorder to top import/first

posted @ 2021-05-21 16:19黑使阅读(651) 评论(0) 编辑收藏举报

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公告

The static

import { myExport } from "/modules/my-module.js";

8 declaration is used to import read-only live bindings which are exported by another module. The imported bindings are called live bindings because they are updated by the module that exported the binding, but cannot be re-assigned by the importing module.

In order to use the

import { myExport } from "/modules/my-module.js";

8 declaration in a source file, the file must be interpreted by the runtime as a module. In HTML, this is done by adding

import { foo, bar } from "/modules/my-module.js";

0 to the

import { foo, bar } from "/modules/my-module.js";

1 tag. Modules are automatically interpreted in strict mode.

There is also a function-like dynamic

import { foo, bar } from "/modules/my-module.js";

2, which does not require scripts of

import { foo, bar } from "/modules/my-module.js";

0.

import defaultExport from "module-name";
import * as name from "module-name";
import { export1 } from "module-name";
import { export1 as alias1 } from "module-name";
import { default as alias } from "module-name";
import { export1, export2 } from "module-name";
import { export1, export2 as alias2, /* … */ } from "module-name";
import { "string name" as alias } from "module-name";
import defaultExport, { export1, /* … */ } from "module-name";
import defaultExport, * as name from "module-name";
import "module-name";

Name that will refer to the default export from the module. Must be a valid JavaScript identifier.

The module to import from. The evaluation of the specifier is host-specified. This is often a relative or absolute URL to the

import { foo, bar } from "/modules/my-module.js";

6 file containing the module. In Node, extension-less imports often refer to packages in

import { foo, bar } from "/modules/my-module.js";

7. Certain bundlers may permit importing files without extensions; check your environment. Only single quoted and double quoted Strings are allowed.

Name of the module object that will be used as a kind of namespace when referring to the imports. Must be a valid JavaScript identifier.

Name of the exports to be imported. The name can be either an identifier or a string literal, depending on what

import { foo, bar } from "/modules/my-module.js";

5 declares to export. If it is a string literal, it must be aliased to a valid identifier.

Names that will refer to the named imports. Must be a valid JavaScript identifier.

import { myExport } from "/modules/my-module.js";

8 declarations can only be present in modules, and only at the top-level (i.e. not inside blocks, functions, etc.). If an

import { myExport } from "/modules/my-module.js";

8 declaration is encountered in non-module contexts (for example,

import { foo, bar } from "/modules/my-module.js";

1 tags without

import { foo, bar } from "/modules/my-module.js";

0,

import { reallyReallyLongModuleExportName as shortName } from "/modules/my-module.js";

6,

import { reallyReallyLongModuleExportName as shortName } from "/modules/my-module.js";

7, which all have "script" or "function body" as parsing goals), a

import { reallyReallyLongModuleExportName as shortName } from "/modules/my-module.js";

8 is thrown. To load modules in non-module contexts, use the dynamic import syntax instead.

All imported bindings cannot be in the same scope as any other declaration, including

import { reallyReallyLongModuleExportName as shortName } from "/modules/my-module.js";

9,

// /modules/my-module.js
const a = 1;
export { a as "a-b" };

0,

// /modules/my-module.js
const a = 1;
export { a as "a-b" };

1,

// /modules/my-module.js
const a = 1;
export { a as "a-b" };

2,

// /modules/my-module.js
const a = 1;
export { a as "a-b" };

3, and

import { myExport } from "/modules/my-module.js";

8 declaration.

import { myExport } from "/modules/my-module.js";

8 declarations are designed to be syntactically rigid (for example, only string literal specifiers, only permitted at the top-level, all bindings must be identifiers), which allows modules to be statically analyzed and linked before getting evaluated. This is the key to making modules asynchronous by nature, powering features like .

There are four forms of

import { myExport } from "/modules/my-module.js";

8 declarations:

: // /modules/my-module.js const a = 1; export { a as "a-b" }; 7
: // /modules/my-module.js const a = 1; export { a as "a-b" }; 8
: // /modules/my-module.js const a = 1; export { a as "a-b" }; 9
: import { "a-b" as a } from "/modules/my-module.js"; 0

Below are examples to clarify the syntax.

Named import

Given a value named

import { "a-b" as a } from "/modules/my-module.js";

1 which has been exported from the module

import { "a-b" as a } from "/modules/my-module.js";

2 either implicitly as

import { "a-b" as a } from "/modules/my-module.js";

3 or explicitly using the

import { "a-b" as a } from "/modules/my-module.js";

4 statement, this inserts

import { "a-b" as a } from "/modules/my-module.js";

1 into the current scope.

import { myExport } from "/modules/my-module.js";

You can import multiple names from the same module.

import { foo, bar } from "/modules/my-module.js";

You can rename an export when importing it. For example, this inserts

import { "a-b" as a } from "/modules/my-module.js";

6 into the current scope.

import { reallyReallyLongModuleExportName as shortName } from "/modules/my-module.js";

A module may also export a member as a string literal which is not a valid identifier, in which case you must alias it in order to use it in the current module.

// /modules/my-module.js
const a = 1;
export { a as "a-b" };

import { "a-b" as a } from "/modules/my-module.js";

Note:

import { "a-b" as a } from "/modules/my-module.js";

7 is not equivalent to

import { "a-b" as a } from "/modules/my-module.js";

8 and then destructuring

import { "a-b" as a } from "/modules/my-module.js";

9 and

import myDefault from "/modules/my-module.js";

0 from

import { foo, bar } from "/modules/my-module.js";

4. Named and default imports are distinct syntaxes in JavaScript modules.

Default import

Default exports need to be imported with the corresponding default import syntax. The simplest version directly imports the default:

import myDefault from "/modules/my-module.js";

Since the default export doesn't explicitly specify a name, you can give the identifier any name you like.

It is also possible to specify a default import with namespace imports or named imports. In such cases, the default import will have to be declared first. For instance:

import myDefault, * as myModule from "/modules/my-module.js";
// myModule.default and myDefault point to the same binding

or

import myDefault, { foo, bar } from "/modules/my-module.js";

Importing a name called

import myDefault from "/modules/my-module.js";

2 has the same effect as a default import. It is necessary to alias the name because

import myDefault from "/modules/my-module.js";

2 is a reserved word.

import { default as myDefault } from "/modules/my-module.js";

Namespace import

The following code inserts

import myDefault from "/modules/my-module.js";

4 into the current scope, containing all the exports from the module located at

import myDefault from "/modules/my-module.js";

5.

import { myExport } from "/modules/my-module.js";

0

Here,

import myDefault from "/modules/my-module.js";

4 represents a namespace object which contains all exports as properties. For example, if the module imported above includes an export

import myDefault from "/modules/my-module.js";

7, you would call it like this:

import { myExport } from "/modules/my-module.js";

1

import myDefault from "/modules/my-module.js";

4 is a sealed object with . The default export available as a key called

import myDefault from "/modules/my-module.js";

2. For more information, see .

Note: JavaScript does not have wildcard imports like

import myDefault, * as myModule from "/modules/my-module.js";
// myModule.default and myDefault point to the same binding

1, because of the high possibility of name conflicts.

Import a module for its side effects only

Import an entire module for side effects only, without importing anything. This runs the module's global code, but doesn't actually import any values.

import { myExport } from "/modules/my-module.js";

2

This is often used for polyfills, which mutate the global variables.

Import declarations are hoisted. In this case, that means that the identifiers the imports introduce are available in the entire module scope, and their side effects are produced before the rest of the module's code runs.

import { myExport } from "/modules/my-module.js";

3

In this example, we create a re-usable module that exports a function to get all primes within a given range.

import { myExport } from "/modules/my-module.js";

4

import { myExport } from "/modules/my-module.js";

5

The identifier being imported is a live binding, because the module exporting it may re-assign it and the imported value would change. However, the module importing it cannot re-assign it. Still, any module holding an exported object can mutate the object, and the mutated value can be observed by all other modules importing the same value.

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