VS 2019 gulp file issue.

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VS2019

Consider app.config remapping of assembly "WebGrease, Culture=neutral, PublicKeyToken=31bf3856ad364e35" from Version "1.5.1.25624" [] to Version "1.6.5135.21930"

I am facing the issue while buid gulp.

gulp.task('build-solution', () => {
		const solution = `./${config.solutionName}.sln`;

		return gulp.src(solution)
			.pipe(msbuild({
				...defaultMsbuildConfig,
				
			}));
	});

What I have tried:

I have removed restore and it fails

Posted 5-Oct-20 3:32am

BoopathyNehru

Updated 5-Oct-20 4:18am

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Sandeep Mewara · Answer 1 · 2020-10-05T04:19:00

First try deleting bin & obj folder and rebuild. If this does'nt solve, your versions are still a mess and need to resolve.

Here, same issue and accepted solution: How to solve warning: Consider app.config remapping of assembly | The ASP.NET Forums[^]

For this situation, this packages must be uninstalled and reinstalled to solve the problem, below is the reason which you could refer to:

Quote:
The reason packages must be uninstalled and reinstalled is:
-When installing a package, we determine the target framework of your project
-We then match that up with the package contents, finding the appropriate \lib\ folder (and \content\ folder)
-Assembly references are added with Hint Paths that point to the package's \lib\ folder, with the right subfolder (\lib\net40 for example)
-Content files are copied from the packages \content\ folder, with the right subfolder (\content\net40 for example)
-We record the targetFramework used to install the package within the packages.config file
-After you change your project's target framework, the Hint Paths still point to net40
-When you uninstall packages, we check the targetFramework that was recorded in packages.config to see what target framework's libs/content to remove from your project
-When you reinstall the package, we detect your updated target framework and reference/copy the right libs/content

Highlevel, seems you need to remove the older reference, then added the correct reference.