Ivy: Generic type 'ɵɵBaseDef<T>' requires 1 type argument(s).

🐞 bug report

Affected Package

@angular/material
@angular/flex-layout

Is this a regression?

Yes - works prior to building with Ivy.

Description

Building with Ivy causes .d.ts files to be modified. As part of those modifications, the following line is added:

`static ngBaseDef: ɵngcc0.ɵɵBaseDef;`

This causes the build to fail. Switching 'enableIvy' back to false still results in a broken build due to the .d.ts file modifications (although the 'WARNING' lines disappear).

🔬 Minimal Reproduction

https://github.com/kccsf/IvyIssue

🔥 Exception or Error



WARNING in Unknown member type: "[key: string]: (data: any) => void;

WARNING in Unknown member type: "[key: string]: (data: any) => void;

WARNING in Unknown member type: "[key: string]: (data: any) => void;

ERROR in node_modules/@angular/flex-layout/extended/typings/class/class.d.ts(30,23): error TS2314: Generic type 'ɵɵBaseDef' requires 1 type argument(s).
node_modules/@angular/flex-layout/extended/typings/img-src/img-src.d.ts(38,23): error TS2314: Generic type 'ɵɵBaseDef' requires 1 type argument(s).
node_modules/@angular/flex-layout/flex/typings/flex/flex.d.ts(50,23): error TS2314: Generic type 'ɵɵBaseDef' requires 1 type argument(s).
node_modules/@angular/flex-layout/grid/typings/align-columns/align-columns.d.ts(28,23): error TS2314: Generic type 'ɵɵBaseDef' requires 1 type argument(s).
node_modules/@angular/flex-layout/grid/typings/align-rows/align-rows.d.ts(28,23): error TS2314: Generic type 'ɵɵBaseDef' requires 1 type argument(s).
node_modules/@angular/flex-layout/grid/typings/areas/areas.d.ts(31,23): error TS2314: Generic type 'ɵɵBaseDef' requires 1 type argument(s).
node_modules/@angular/flex-layout/grid/typings/auto/auto.d.ts(31,23): error TS2314: Generic type 'ɵɵBaseDef' requires 1 type argument(s).
node_modules/@angular/flex-layout/grid/typings/columns/columns.d.ts(32,23): error TS2314: Generic type 'ɵɵBaseDef' requires 1 type argument(s).
node_modules/@angular/flex-layout/grid/typings/gap/gap.d.ts(31,23): error TS2314: Generic type 'ɵɵBaseDef' requires 1 type argument(s).
node_modules/@angular/flex-layout/grid/typings/rows/rows.d.ts(32,23): error TS2314: Generic type 'ɵɵBaseDef' requires 1 type argument(s).
node_modules/@angular/material/menu/typings/menu.d.ts(161,23): error TS2314: Generic type 'ɵɵBaseDef' requires 1 type argument(s).

🌍 Your Environment

Angular Version:



Angular CLI: 8.1.0-beta.2
Node: 10.15.3
OS: win32 x64
Angular: 8.1.0-next.3
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.801.0-beta.2
@angular-devkit/build-angular     0.801.0-beta.2
@angular-devkit/build-optimizer   0.801.0-beta.2
@angular-devkit/build-webpack     0.801.0-beta.2
@angular-devkit/core              8.1.0-beta.2
@angular-devkit/schematics        8.1.0-beta.2
@angular/cdk                      8.0.0
@angular/cli                      8.1.0-beta.2
@angular/flex-layout              8.0.0-beta.26
@angular/material                 8.0.1
@ngtools/webpack                  8.1.0-beta.2
@schematics/angular               8.1.0-beta.2
@schematics/update                0.801.0-beta.2
rxjs                              6.3.3
typescript                        3.4.5
webpack                           4.34.0

Anything else relevant?

This seems to happen when a Directive inherits from another class (that doesn't have any metadata).

I have the same problem when I compile my library that uses angular-l10n:
robisim74/angular-l10n#253

The base class that causes the problem is this one:
https://github.com/robisim74/angular-l10n/blob/master/src/models/base-directive.ts

Apparently this is a regression in 8.1.0, it works fine with 8.0.0 and enableIvy: true.

See the discussion on robisim74/angular-l10n#253

Looks like this is still broken by default when running ng new App and then enabling Ivy.

I wasn't able to fix it by making the cli/compiler version changes.

{
  "name": "*************",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^8.1.3",
    "@angular/cdk": "^8.1.2",
    "@angular/common": "~8.1.1",
    "@angular/compiler": "~8.1.1",
    "@angular/core": "~8.1.1",
    "@angular/forms": "~8.1.1",
    "@angular/material": "^8.1.2",
    "@angular/platform-browser": "~8.1.1",
    "@angular/platform-browser-dynamic": "~8.1.1",
    "@angular/router": "~8.1.1",
    "moment": "^2.24.0",
    "rxjs": "~6.4.0",
    "tslib": "^1.9.0",
    "zone.js": "~0.9.1"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.801.1",
    "@angular/cli": "~8.2.0-next.0",
    "@angular/compiler-cli": "~8.2.0-next.0",
    "@angular/language-service": "~8.1.1",
    "@types/jasmine": "~3.3.8",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "~8.9.4",
    "codelyzer": "^5.0.0",
    "jasmine-core": "~3.4.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~4.1.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~2.0.1",
    "karma-jasmine-html-reporter": "^1.4.0",
    "protractor": "~5.4.0",
    "ts-node": "~7.0.0",
    "tslint": "~5.15.0",
    "typescript": "~3.4.3"
  }
}

tsconfig.json

  "angularCompilerOptions": {
    "fullTemplateTypeCheck": true,
    "strictInjectionParameters": true
  }

tsconfig.app.json

  "angularCompilerOptions": {
    "enableIvy": true
  }

Gives me the error:
An unhandled exception occurred: Object prototype may only be an Object or null: undefined

Is there an ETA on when it'll be fixed on a stable version?

same here

@petebacondarwin

@petebacondarwin I'm still seeing this bug on 9.0.0-next.8, with type errors springing up for .d.ts entries for abstract superclasses (without metadata) for concrete components. Would you like me to try to create a reproduction or are you aware of the issue?

@benelliott

@benelliott we are aware of that issue, it's a slight variation of the one reported here. A compilation error occurs for base classes without @Directive() decorator that require generic type arguments themselves.

You can probably workaround that issue by adding the @Directive() decorator to the base class, which ensures that an ngDirectiveDef is produced instead of the ngBaseDef; the former does not suffer from the same bug.

@JoostK

@JoostK Thanks - is there a separate issue I can follow for that one?

The typedefs are coming from an internal library - AFAIK selectorless directives are only supported on v9+ so I couldn't add that to my library without breaking compat for v8 right?

@benelliott

@benelliott There's no github issue at the moment. The plan is to get rid of ngBaseDef altogether, so no effort has been put into fixing this issue. Feel free to open an issue for tracking purposes, if you like.

Your point regarding backwards compatibility is a valid concern for which I don't know the answer. I suspect it may indeed break, as you're afraid of.

As an alternative, you could insert a default type for the generic type parameter:

export class BaseComp<T> {}

becomes

export class BaseComp<T=unknown> {}

This is not ideal and should just be considered as a temporary workaround.

@JoostK

@JoostK Thanks. I think this won't work in my case as the generic is bounded by an extends, ie I can't do BaseComp<T extends U = unknown>.

For anyone else who has the same issue as me - I worked around it by adding a Directive with a dummy selector (not empty, but something that obviously shouldn't be used) to my abstract classes and then declaring them in my modules, inspired by this commit in @angular/components:

angular/components@8c98013

ok, please undo package-lock.json file
then npm install
should work, it is working fine for me

I still have this problem

node_modules/narik-app-core/lib/base/narik-detail-form.d.ts:61:40 - error TS2314: Generic type 'NarikDetailForm<TE>' requires 1 type argument(s).

61     static ngBaseDef: ɵngcc0.ɵɵBaseDef<NarikDetailForm>;

"dependencies": {
    "@angular/animations": "~9.0.0-next.12",
    "@angular/cdk": "^8.0.0",
    "@angular/common": "~9.0.0-next.12",
    "@angular/compiler": "~9.0.0-next.12",
    "@angular/core": "~9.0.0-next.12",
    "@angular/flex-layout": "^8.0.0-beta.26",
    "@angular/forms": "~9.0.0-next.12",
    "@angular/material": "^8.0.0",
    "@angular/platform-browser": "~9.0.0-next.12",
    "@angular/platform-browser-dynamic": "~9.0.0-next.12"...
...
}

"devDependencies": {
    "@angular-builders/custom-webpack": "^8.0.2",
    "@angular-devkit/build-angular": "~0.900.0-next.15",
    "@angular/cli": "~9.0.0-next.15",
    "@angular/compiler-cli": "~9.0.0-next.12",
    "@angular/language-service": "~9.0.0-next.12",
....
}

These errors will likely be fixed by #33264.

@gkalpak

Thank you @gkalpak
It was fixed by "9.0.0-next.14"

add default type to OwlDateTime<T>

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Ivy: Generic type 'ɵɵBaseDef<T>' requires 1 type argument(s). #31160

🐞 bug report

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Is this a regression?

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🔥 Exception or Error

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Ivy: Generic type 'ɵɵBaseDef<T>' requires 1 type argument(s). #31160

Description

🐞 bug report

Affected Package

Is this a regression?

Description

🔬 Minimal Reproduction

🔥 Exception or Error

🌍 Your Environment

Activity

magnattic commented on Jun 20, 2019

magnattic commented on Jun 20, 2019

29 remaining items

willkara commented on Jul 30, 2019

mahdiprog commented on Aug 26, 2019

benelliott commented on Sep 26, 2019

JoostK commented on Sep 26, 2019

benelliott commented on Sep 26, 2019

JoostK commented on Sep 26, 2019

benelliott commented on Sep 27, 2019

benelliott commented on Oct 3, 2019

xboysms commented on Oct 21, 2019

abadakhshan commented on Oct 24, 2019

gkalpak commented on Oct 24, 2019

abadakhshan commented on Oct 28, 2019

angular-automatic-lock-bot commented on Nov 28, 2019

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