背景
我试图提高我的错误编码的可见性和结构，并决定添加依赖包 "chalk"，它需要纯 ESM。最初，我的 ts.config/package.json 是一个 Common.js 文件，并没有声明 "type" 为 "module"。按照 chalk 文档和类似的问题解决方法进行了一些更改。重新加载我的应用程序后，我收到以下错误：
错误
[user]
[user] > user@1.0.0 start
[user] > ts-node-dev src/index.ts
[user]
[user] [INFO] 02:43:13 ts-node-dev ver. 2.0.0 (using ts-node ver. 10.8.0, typescript ver. 4.7.2)
[user] Compilation error in /app/src/index.ts
[user] Error: Must use import to load ES Module: /app/src/index.ts
[user] at Object.<anonymous> (/app/src/index.ts:1:7)
[user] at Module._compile (node:internal/modules/cjs/loader:1105:14)
[user] at Module._compile (/app/node_modules/source-map-support/source-map-support.js:568:25)
[user] at Module.m._compile (/tmp/ts-node-dev-hook-07536074778072654.js:69:33)
[user] at Module._extensions..js (node:internal/modules/cjs/loader:1159:10)
[user] at require.extensions..jsx.require.extensions..js (/tmp/ts-node-dev-hook-07536074778072654.js:114:20)
[user] at require.extensions.<computed> (/tmp/ts-node-dev-hook-07536074778072654.js:71:20)
[user] at Object.nodeDevHook [as .ts] (/app/node_modules/ts-node-dev/lib/hook.js:63:13)
[user] at Module.load (node:internal/modules/cjs/loader:981:32)
[user] at Function.Module._load (node:internal/modules/cjs/loader:827:12)
[user] [ERROR] 02:43:13 Error: Must use import to load ES Module: /app/src/index.ts
以下是我认为必要的更改要求：
package.json
{
"name": "user",
"version": "1.0.0",
"description": "",
"type": "module",
"main": "index.ts",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"start": "ts-node-dev src/index.ts"
},
"keywords": [],
"author": "",
"license": "ISC",
"dependencies": {
"@types/bcrypt": "^5.0.0",
"@types/cookie-parser": "^1.4.3",
"@types/express": "^4.17.13",
"@types/jsonwebtoken": "^8.5.8",
"@types/morgan": "^1.9.3",
"@types/multer": "^1.4.7",
"axios": "^0.27.2",
"bcrypt": "^5.0.1",
"body-parser": "^1.20.0",
"chalk": "^5.0.1",
"cookie-parser": "^1.4.6",
"cors": "^2.8.5",
"dependencies": "^0.0.1",
"dotenv": "^16.0.1",
"express": "^4.18.1",
"joi": "^17.6.0",
"jsonwebtoken": "^8.5.1",
"mongodb": "^4.6.0",
"mongoose": "^6.3.3",
"morgan": "^1.10.0",
"multer": "^1.4.4",
"nodemailer": "^6.7.5",
"typescript": "^4.7.2",
"uuid": "^8.3.2",
"validator": "^13.7.0"
},
"devDependencies": {
"nodemon": "^2.0.16",
"ts-node-dev": "^2.0.0"
}
}
index.ts
import mongoose from "mongoose";
import app from "./app";
const dbURI ='blabla' */
let PORT = 3000; /* process.env.PORT */
async function start() {
//T: Connecting to MongoDB Database
try{
await mongoose
.connect(dbURI)
console.log(`connected to DB!`);
}catch(err) {
console.log(err);
};
app.listen(PORT,()=>{
console.log(
`connected to PORT: ${PORT} and listening...although it may not bee that port`)
});
}
start()
ts.config
{
"compilerOptions": {
/* Visit https://aka.ms/tsconfig.json to read more about this file */
/* Basic Options */
// "incremental": true, /* Enable incremental compilation */
"target": "ESNext", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
"module": "ESNext", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
// "lib": [], /* Specify library files to be included in the compilation. */
// "allowJs": true, /* Allow javascript files to be compiled. */
// "checkJs": true, /* Report errors in .js files. */
// "jsx": "preserve", /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
"declaration": true, /* Generates corresponding '.d.ts' file. */
// "declarationMap": true, /* Generates a sourcemap for each corresponding '.d.ts' file. */
// "sourceMap": true, /* Generates corresponding '.map' file. */
// "outFile": "./", /* Concatenate and emit output to single file. */
// "outDir": "./", /* Redirect output structure to the directory. */
// "rootDir": "./", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
// "composite": true, /* Enable project compilation */
// "tsBuildInfoFile": "./", /* Specify file to store incremental compilation information */
// "removeComments": true, /* Do not emit comments to output. */
// "noEmit": true, /* Do not emit outputs. */
// "importHelpers": true, /* Import emit helpers from 'tslib'. */
// "downlevelIteration": true, /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
// "isolatedModules": true, /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
/* Strict Type-Checking Options */
"strict": true, /* Enable all strict type-checking options. */
// "noImplicitAny": true, /* Raise error on expressions and declarations with an implied 'any' type. */
// "strictNullChecks": true, /* Enable strict null checks. */
// "strictFunctionTypes": true, /* Enable strict checking of function types. */
// "strictBindCallApply": true, /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
// "strictPropertyInitialization": true, /* Enable strict checking of property initialization in classes. */
// "noImplicitThis": true, /* Raise error on 'this' expressions with an implied 'any' type. */
// "alwaysStrict": true, /* Parse in strict mode and emit "use strict" for each source file. */
/* Additional Checks */
// "noUnusedLocals": true, /* Report errors on unused locals. */
// "noUnusedParameters": true, /* Report errors on unused parameters. */
// "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
// "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
// "noUncheckedIndexedAccess": true, /* Include 'undefined' in index signature results */
/* Module Resolution Options */
"moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
// "baseUrl": "./", /* Base directory to resolve non-absolute module names. */
// "paths": {}, /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
// "rootDirs": [], /* List of root folders whose combined content represents the structure of the project at runtime. */
// "typeRoots": [], /* List of folders to include type definitions from. */
// "types": [], /* Type declaration files to be included in compilation. */
"allowSyntheticDefaultImports": true, /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
"esModuleInterop": true, /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
// "preserveSymlinks": true, /* Do not resolve the real path of symlinks. */
// "allowUmdGlobalAccess": true, /* Allow accessing UMD globals from modules. */
/* Source Map Options */
// "sourceRoot": "", /* Specify the location where debugger should locate TypeScript files instead of source locations. */
// "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */
// "inlineSourceMap": true, /* Emit a single file with source maps instead of having a separate file. */
// "inlineSources": true, /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
/* Experimental Options */
// "experimentalDecorators": true, /* Enables experimental support for ES7 decorators. */
// "emitDecoratorMetadata": true, /* Enables experimental support for emitting type metadata for decorators. */
/* Advanced Options */
"skipLibCheck": true, /* Skip type checking of declaration files. */
"forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */
},
"include": [
"src/**/*"
]
}
编辑：我创建了一个名为chalk的文件进行测试
import express from "express";
import { NotFoundError } from "./errors/NotFoundError";
import errorHandler from "./middleware/error-handler";
import userIndex from "./routes/userIndex";
import morgan from "morgan"
import cookieParser from "cookie-parser";
import chalk from 'chalk'
const app = express();
app.use(express.json());
app.use(cookieParser());
app.set("trust proxy", true);
const log = console.log;
// I tried all methods below...
app.use(
morgan(
// "dev",
function (tokens, req, res) {
return [
chalk.red (tokens.method(req, res)),
chalk.green(tokens.url(req, res)),
chalk.yellow(tokens.status(req, res),"-"),
chalk.bgBlueBright(tokens["response-time"](req, res), "ms"),
chalk.cyan(tokens['date'](req, res),'web'),
chalk.blue(tokens.res(req, res, "content-length")),
].join(" ");
})
)
log(chalk.red('I'm red'))
log(chalk.green(
'I am a green line ' +
chalk.blue.underline.bold('with a blue substring') +
' that becomes green again!'
));
log(chalk.rgb(123, 45, 67).underline('Underlined reddish color'));
app.use(morgan( function (tokens, req, res) {
return chalk.yellow(tokens['date'](req, res),'web')
+ ' ' + chalk.blue(tokens['remote-addr'](req, res))
+ ' ' + chalk.cyanBright(tokens.method(req, res))
+ ' ' + chalk.green(tokens.url(req, res))
+ ' ' + chalk.magentaBright(tokens.status(req, res))
+ ' ' + chalk.red(tokens['response-time'](req, res))
}))
app.use(morgan(`
:remote-addr :remote-user :method :url :status :res[content-length] - :response-time ms :date[web]
`));
app.use('/users', userIndex);
app.all("*", async (req, res, next) => {
next(new NotFoundError());
});
app.use(errorHandler);
export default app ;