Solved by @alexzuza. See his answer below - big ups!
Basically, remove the node_modules folder from the ng2-opd-popup folder, and edit the src/tsconfig.app.json to match the path. See comments also for link to rimraf setup, to automatically exclude the node_modules from being installed with npm install.
I get this error:
ERROR in Error encountered resolving symbol values statically. Calling function 'makeDecorator', function calls are not supported. Consider replacing the function or lambda with a reference to an exported function
The solution found here, is not working - im running angular v. 4.3.
package.json:
PopupModule.forRoot(),
tsconfig.json:
"paths": {
"@angular/*": ["node_modules/@angular/*"]
},
tsconfig.json:
{
"compileOnSave": false,
"compilerOptions": {
"baseUrl": ".",
"outDir": "./dist/out-tsc",
"sourceMap": true,
"declaration": false,
"moduleResolution": "node",
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"target": "es5",
"typeRoots": [
"node_modules/@types"
],
"paths": {
"@angular/common": ["../node_modules/@angular/common"],
"@angular/compiler": ["../node_modules/@angular/compiler"],
"@angular/core": ["../node_modules/@angular/core"],
"@angular/forms": ["../node_modules/@angular/forms"],
"@angular/platform-browser": ["../node_modules/@angular/platform-browser"],
"@angular/platform-browser-dynamic": ["../node_modules/@angular/platform-browser-dynamic"],
"@angular/router": ["../node_modules/@angular/router"],
"@angular/http": ["../node_modules/@angular/http"]
},
"lib": [
"es2017",
"dom"
]
}
}
tsconfig.app.json:
{
"compileOnSave": false,
"compilerOptions": {
"baseUrl": ".",
"outDir": "./dist/out-tsc",
"sourceMap": true,
"declaration": false,
"moduleResolution": "node",
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"target": "es5",
"typeRoots": [
"node_modules/@types"
],
"paths": {
"@angular/*": ["../node_modules/@angular/*"]
},
"lib": [
"es2017",
"dom"
]
}
}
My file structure. 
The package im trying to use: ng2-opd-popup
Somebody got a solution for this, or maybe a better package to use?
Change src/tsconfig.app.json like:
{
"extends": "../tsconfig.json",
"compilerOptions": {
"outDir": "../out-tsc/app",
"baseUrl": "./",
"module": "es2015",
"types": [],
"paths": {
"@angular/*": ["../node_modules/@angular/*"] <=== add this
}
},
"exclude": [
"test.ts",
"**/*.spec.ts"
]
}
You should use .. because baseUrl refers to src folder
https://github.com/alexzuza/angular-cli-make-decorator-fix
It should work for aot, but for jit mode you have to remove node_modules/ng2-opd-popup/node_modules folder

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