英文:
When I Transpile my TypeScript file, the variables declared in 'let' and 'const' are converted to 'var' in generated Javascript file
问题
I have even made manipulation in tsconfig.json (i.e. target) file.
我甚至在tsconfig.json（即目标）文件中进行了修改。
I have set my "target":"ES6" in tsconfig.json as of now.
我现在在tsconfig.json中设置了"target":"ES6"。
While I have tried various solutions, yet the transpilation is not working out correctly. The transpilation works out correctly when I just type tsc command in the terminal.
虽然我尝试了各种解决方案，但转译结果仍然不正确。只要我在终端中键入tsc命令，转译就会正确执行。
This is the code from 'data.ts'
这是来自'data.ts'的代码
const FirstName: string = "John"
let age: number = 23
and the generated 'data.js'
以及生成的'data.js'
var FirstName = "John";
var age = 23;
This is my file structure
这是我的文件结构
英文:
I have even made manipulation in tsconfig.json (i.e. target) file.
I have set my "target":"ES6" in tsconfig.json as of now.
While I have tried various solutions, yet the transpilation is not working out correctly. The transpilation works out correctly when I just type tsc command in the terminal.
This is the code from 'data.ts'
const FirstName: string = "John"
let age: number = 23
and the generated 'data.js'
var FirstName = "John";
var age = 23;
This is my file structure
答案1
得分: 2
tsc CLI 文档 明确指出了这一点 — 当您在 tsc 命令中包含文件参数时，将忽略您的 TSConfig 配置：
使用 CLI
在本地运行
tsc将编译由tsconfig.json定义的最接近的项目，或者您可以通过传递一组您想要的 TypeScript 文件的 glob 来编译一组文件。当在命令行中指定输入文件时，将忽略tsconfig.json文件。# 通过向后查找文件系统来运行基于 tsconfig.json 的编译 tsc # 使用编译器默认设置仅发出 index.ts 的 JS tsc index.ts
如果您想要在编译中包含特定文件，可以在项目配置中使用 includes 字段。
英文:
The tsc CLI documentation makes this clear — your TSConfig is ignored when you include file arguments to tsc:
> ## Using the CLI
>
> Running tsc locally will compile the closest project defined by a tsconfig.json, or you can compile a set of TypeScript files by passing in a glob of files you want. When input files are specified on the command line, tsconfig.json files are ignored.
>
> lang-sh
> # Run a compile based on a backwards look through the fs for a tsconfig.json
> tsc
>
> # Emit JS for just the index.ts with the compiler defaults
> tsc index.ts
>
If you want to include certain files in the compilation, you can use the includes field in your project config.
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