Issue
I am setting up a reusable text input that could be used with reactive forms.
I am getting the following error when i add it to the declaration array of the app module and issue ng serve
.
/ Generating browser application bundles (phase: building)...C:\SPA\node_modules\typescript\lib\typescript.js:19487
return text.replace(/{(\d+)}/g, function (_match, index) { return "" + ts.Debug.checkDefined(args[+index + baseIndex]); });
^
Error: Debug Failure.
at C:\SPA\node_modules\typescript\lib\typescript.js:19487:89
at String.replace (<anonymous>)
at formatStringFromArgs (C:\SPA\node_modules\typescript\lib\typescript.js:19487:21)
at Object.createDetachedDiagnostic (C:\SPA\node_modules\typescript\lib\typescript.js:19503:20)
at parseErrorAtPosition (C:\SPA\node_modules\typescript\lib\typescript.js:30898:42)
at parseErrorAt (C:\SPA\node_modules\typescript\lib\typescript.js:30905:13)
at parseErrorAtCurrentToken (C:\SPA\node_modules\typescript\lib\typescript.js:30892:13)
at parseErrorForInvalidName (C:\SPA\node_modules\typescript\lib\typescript.js:31130:17)
at parseErrorForMissingSemicolonAfter (C:\SPA\node_modules\typescript\lib\typescript.js:31102:21)
at parseExpressionOrLabeledStatement (C:\SPA\node_modules\typescript\lib\typescript.js:34992:21)
My Environment
Angular CLI: 13.0.2
Node: 16.13.0
Package Manager: npm 8.1.3
OS: win32 x64
Angular:
...
Package Version
------------------------------------------------------
@angular-devkit/architect 0.1300.2 (cli-only)
@angular-devkit/core 13.0.2 (cli-only)
@angular-devkit/schematics 13.0.2 (cli-only)
@schematics/angular 13.0.2 (cli-only)
Here is the code
text-input.component.ts
import { Component, Input, Self } from '@angular/core';
import { ControlValueAccessor, NgControl } from '@angular/forms';
@Component({
selector: 'app-text-input',
templateUrl: './text-input.component.html',
styleUrls: ['./text-input.component.css']
})
export class TextInputComponent implements ControlValueAccessor {
@Input() label: string = '';
@Input() labelMustMatch: string = '';
@Input() placeHolder: string = '';
@Input() type: string = 'text';
constructor(@Self() public ngControl: NgControl) {
this.ngControl.valueAccessor = this;
}
writeValue(obj: any): void {
}
registerOnChange(fn: any): void {
}
registerOnTouched(fn: any): void {
}
setDisabledState?(isDisabled: boolean): void {}
}
text-input.component.html
<input
[class.is-invalid]="ngControl.invalid && ngControl.touched && ngControl.dirty"
type={{ type }}
class="form-control"
[formControl]="$any(ngControl.control)"
placeholder={{ placeHolder }}
>
<!--required-->
<div class="invalid-feedback" *ngIf="ngControl.control.errors?.required">
{{label}} is required
</div>
<!--minlength-->
<div class="invalid-feedback" *ngIf="ngControl.control.errors?.minlength">
{{label}} must be minimum {{ngControl.control.errors.minlength['requiredLength']}} characters
</div>
<!--maxlength-->
<div class="invalid-feedback" *ngIf="ngControl.control.errors?.maxlength">
{{label}} must be maximum {{ngControl.control.errors.maxlength['requiredLength']}} characters
</div>
<!--onlyChar-->
<div class="invalid-feedback" *ngIf="ngControl.control.errors.onlyChar">
{{label}} must be only characters
</div>
<!--onlyCharWithSpace-->
<div class="invalid-feedback" *ngIf="ngControl.control.errors.onlyCharWithSpace">
{{label}} must be only characters and space
</div>
<!--mustMatch-->
<div class="invalid-feedback" *ngIf="ngControl.control.errors.mustMatch">
{{labelMustMatch}} do not match
</div>
<!--passwordStrength-->
<div class="invalid-feedback" *ngIf="ngControl.control.errors.passwordStrength">
{{label}} must have an upper case, lower case and a number
</div>
and then using it inside the parent
<app-text-input [formControl]="registerForm.controls['userName']" [label]="'User name'" [placeHolder]="'user name'"></app-text-input>
How can i fix the error?
Solution
I think you may have a typo in these lines:
type={{ type }}
placeholder={{ placeHolder }}
The interpolated values should be wrapped in "
quotes:
type="{{ type }}"
placeholder="{{ placeHolder }}"
You may also need to add optional chaining ?
to control errors, like following:
*ngIf="ngControl.control.errors?.mustMatch"
Full example:
<input
[class.is-invalid]="ngControl.invalid && ngControl.touched && ngControl.dirty"
type="{{ type }}"
class="form-control"
[formControl]="$any(ngControl.control)"
placeholder="{{ placeHolder }}"
>
<!--required-->
<div class="invalid-feedback" *ngIf="ngControl.control.errors?.required">
{{label}} is required
</div>
<!--minlength-->
<div class="invalid-feedback" *ngIf="ngControl.control.errors?.minlength">
{{label}} must be minimum {{ngControl.control.errors.minlength['requiredLength']}} characters
</div>
<!--maxlength-->
<div class="invalid-feedback" *ngIf="ngControl.control.errors?.maxlength">
{{label}} must be maximum {{ngControl.control.errors.maxlength['requiredLength']}} characters
</div>
<!--onlyChar-->
<div class="invalid-feedback" *ngIf="ngControl.control.errors?.onlyChar">
{{label}} must be only characters
</div>
<!--onlyCharWithSpace-->
<div class="invalid-feedback" *ngIf="ngControl.control.errors?.onlyCharWithSpace">
{{label}} must be only characters and space
</div>
<!--mustMatch-->
<div class="invalid-feedback" *ngIf="ngControl.control.errors?.mustMatch">
{{labelMustMatch}} do not match
</div>
<!--passwordStrength-->
<div class="invalid-feedback" *ngIf="ngControl.control.errors?.passwordStrength">
{{label}} must have an upper case, lower case and a number
</div>
Answered By - Telman
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