I have a Play application. The UI of the application is in Angular. I have created a folder ui which is the top level Angular directory.
build.sbt
`ui-dev-build` := {
implicit val UIroot = baseDirectory.value / "ui"
if (runDevBuild != Success) throw new Exception("Oops! UI Build crashed.")
}
def runDevBuild(implicit dir: File): Int = ifUiInstalled(runScript("npm run build"))
package.json
"build": "ng build --output-path ../public/ui",
When the Angular application is build, I transfer the output to the public folder of the Play framework. From there, Play transfers the contacts of the public folder to target folder for deployment. In the index.html (homepage html file), I access angular by including the scripts created in Angular build.
<script src="@routes.Assets.versioned("ui/runtime.js")" type="text/javascript"></script>
<script src="@routes.Assets.versioned("ui/vendor.js")" type="text/javascript"></script>
<script src="@routes.Assets.versioned("ui/styles.js")" type="text/javascript"></script>
<script src="@routes.Assets.versioned("ui/main.js")" type="text/javascript"></script>
<script src="@routes.Assets.versioned("ui/scripts.js")" type="text/javascript"></script>
This works fine.
I want to use ng-ace2-editor in my application - https://github.com/fxmontigny/ng2-ace-editor. I have added it in package.json - "ng2-ace-editor": "0.3.9" and I can see that ng2-ace-editor directory is present in node_modules.
When I run the application, I get error
GET http://localhost:9000/mode-html.js net::ERR_ABORTED 404 (Not Found)
exports.loadScript @ index.js:3802
exports.loadModule @ index.js:4174
setMode @ index.js:10152
push../node_modules/ng2-ace-editor/src/component.js.AceEditorComponent.setMode
I can't understand how to make my application find mode-html.js. The file is present at location "./node_modules/ace-builds/src-min/mode-html.js. I have added this path in "script":[] of package.json but I still get the error.
"scripts":[
"./node_modules/ace-builds/src-min/ace.js",
"./node_modules/ace-builds/src-min/theme-eclipse.js",
"./node_modules/ace-builds/src-min/mode-html.js"
]
Interestingly, things work if I include ace.js in the homepage file
<script src="@routes.Assets.versioned("ui/runtime.js")" type="text/javascript"></script>
<script src="@routes.Assets.versioned("ui/vendor.js")" type="text/javascript"></script>
<script src="@routes.Assets.versioned("ui/styles.js")" type="text/javascript"></script>
<script src="@routes.Assets.versioned("ui/main.js")" type="text/javascript"></script>
<script src="@routes.Assets.versioned("ui/scripts.js")" type="text/javascript"></script>
<script src="@routes.Assets.versioned("javascripts/common/vendor/ace/src-min/ace.js")" type="text/javascript"></script> <!-- this makes things work-->
So I know that issue is that my mode-html.js file is not getting served and most likely it is the path resolution issue but I can't figure out what is it.
Further analysis shows that the following code in ace.js causes the error.
exports.loadModule = function(moduleName, onLoad) {
var module, moduleType;
if (Array.isArray(moduleName)) {
moduleType = moduleName[0];
moduleName = moduleName[1];
}
try {
module = require(moduleName);
} catch (e) {}
if (module && !exports.$loading[moduleName])
return onLoad && onLoad(module);
if (!exports.$loading[moduleName])
exports.$loading[moduleName] = [];
exports.$loading[moduleName].push(onLoad);
if (exports.$loading[moduleName].length > 1)
return;
var afterLoad = function() {
require([moduleName], function(module) {
exports._emit("load.module", {name: moduleName, module: module});
var listeners = exports.$loading[moduleName];
exports.$loading[moduleName] = null;
listeners.forEach(function(onLoad) {
onLoad && onLoad(module);
});
});
};
if (!exports.get("packaged"))
return afterLoad();
net.loadScript(exports.moduleUrl(moduleName, moduleType), afterLoad);
reportErrorIfPathIsNotConfigured();
};
var reportErrorIfPathIsNotConfigured = function() {
if (
!options.basePath && !options.workerPath
&& !options.modePath && !options.themePath
&& !Object.keys(options.$moduleUrls).length
) {
console.error(
"Unable to infer path to ace from script src,",
"use ace.config.set('basePath', 'path') to enable dynamic loading of modes and themes",
"or with webpack use ace/webpack-resolver"
);
reportErrorIfPathIsNotConfigured = function() {};
}
};
Why does explicitly calling <script src="@routes.Assets.versioned("javascripts/common/vendor/ace/src-min/ace.js")" type="text/javascript"></script> make the code work. Should this script be already available in ui/scripts.js as per Angular packaging method https://upgradetoangular.com/angular-news/the-angular-cli-is-a-great-way-to-build-your-angular-app-but-what-it-does-can-be-a-mystery-what-are-those-files-it-generates/?
