I’m currently working on a .NET Core single page application using the React Template for ASP.NET Core SPA Yeoman Generator, which worked great so far.
However, after getting a fresh checkout, I started experiencing the error Cannot find module './wwwroot/dist/vendor-manifest.json' when starting up on top of IIS Express.
Turns out that this is because, by default, the wwwroot/dist directory is excluded from version control while the build process depends on the vendor-manifest.json file therein.
However, the dist directory does not get regenerated on build for some reason.
Perhaps the prepublish step node node_modules/webpack/bin/webpack.js --config webpack.config.vendor.js --env.prod is not always executed, even though the main.js and main.js.map files are updated by build/debug?
The dist directory does get regenerated by running either webpack --config webpack.config.vendor.js or dotnet publish before debugging.
I just copied the prepublish step as a new precompile step in project.json to prevent further head scratching:
{
...,
"scripts": {
"precompile": [
"node node_modules/webpack/bin/webpack.js --config webpack.config.vendor.js --env.prod"
],
"prepublish": [
"npm install",
"node node_modules/webpack/bin/webpack.js --config webpack.config.vendor.js --env.prod",
"node node_modules/webpack/bin/webpack.js --env.prod"
],
"postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
},
...
}Additionally, the project.json file is configured to output the node_modules directory by default.
This is not required so you can just remove the "node_modules", line to prevent unnecessary copying of a large amount of files (unless, perhaps, if you refer to something in there that does not get bundled by webpack).
{
...,
"publishOptions": {
"include": [
"appsettings.json",
"node_modules",
"Views",
"web.config",
"wwwroot"
],
"exclude": [
"wwwroot/dist/*.map"
]
},
...
}References: