What steps can I take to ensure that Visual Studio replaces my JavaScript file during the TypeScript build process?

In my development process using Visual Studio to work on my TypeScript project, I have encountered an issue with the build process. I have a build.ts file that links to all of my other TS files and compiles them into one app.js file along with an associated map file.

Although the build process appears to be successful, if the js file already exists, it is not updated when I rebuild. Deleting the js file allows it to be recreated without any issues, indicating that the problem lies with an existing js file rather than its write permissions.

To work around this issue, I added a call to tsc in my prebuild event command line, which has resolved the update problem by forcing a recompilation. However, this solution feels less than ideal as it requires duplicate configuration settings and may lead to compatibility issues like those experienced when upgrading from TypeScript 1.4 to 1.5.

While I can manage with the workaround in place, it highlights a significant flaw in Visual Studio's handling of compiled output updates, making it necessary for users to intervene manually during the build process.

typescriptvisual-studio-2015

Answer №1

There are certain scenarios where a compile time error in Typescript occurs, resulting in the following conditions being met:

  1. Save and Compile: This setting may lead to the build being marked as successful even if there are compilation errors in Typescript.
  2. Suppress output for reported errors:
    When combined with the previous option, it can create an illusion of a successful build while the JavaScript file remains unchanged.

https://i.stack.imgur.com/aRAiU.png

Answer №2

const clean = require(gulp-clean);

To ensure a clean workspace, execute gulp clean(PathToDelete) prior to compiling your code!

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