Potential null object detected. TypeScript error in Angular application

I am looking to incorporate an image file into my "convert" function.

Here is the code snippet from my component.html for the input:

<li>
    <label for="avatarIMG" id="avatarLbL"> image: </label>
    <input type="file" accept="image/*" #imageBox name="image" id="avatarinput" (change)="convert($event)">
    <button type="button" id="avatarInputBTN" (click)="imageBox.click()"> Profile Picture </button>
</li>

The objective is to transmit the values of the object along with the image file captured from the form to the component.ts. Below is the relevant code:

public convert(e: Event): void {
    this.eventFiles = (e.target as HTMLInputElement).files[0];
    if (this.eventFiles !== null) {
        this.user.image = this.eventFiles;
        const fileReader = new FileReader();
        fileReader.onload = args => this.preview = args.target?.result?.toString();
        fileReader.readAsDataURL(this.eventFiles);
    }
}

An error message indicating 'object possibly null' arises when trying to access (e.target as HTMLInputElement).files[0]. How can I address this issue?..

Answer №1

Check out this solution:

this.selectedFile = (event.target as HTMLInputElement)?.files?.[0];

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