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allow initialization in the constructor

See original GitHub issue

For class, the following should be allowed, right? But I get a warning.

class Foo {
    readonly bar = 1; // OK
    readonly baz: string;
    constructor() {
        this.baz = "hello"; // OK
    }
}

tslint warning

[tslint] Modifying properties of existing object not allowed. (no-object-mutation)

tsconfig.json

{
    "extends": [
        "../../../../tslint.json"
    ],
    "rules": {
        "readonly-keyword": [true, "ignore-interface",  "ignore-class"],
        "readonly-array": true,
        "no-let": true,
        "no-this": true,
        "no-mixed-interface": true,
        "no-object-mutation": true
    }
}

Issue Analytics

State:
Created 6 years ago
Comments:5 (3 by maintainers)

Top GitHub Comments

1reaction

jonaskellocommented, Dec 28, 2017

The no-object-mutation already has a ignore-prefix option. @veeramarni could you try to change your tslint.json to the one below and see if it helps?

{
    "extends": [
        "../../../../tslint.json"
    ],
    "rules": {
        "readonly-keyword": [true, "ignore-interface",  "ignore-class"],
        "readonly-array": true,
        "no-let": true,
        "no-this": true,
        "no-mixed-interface": true,
        "no-object-mutation": [true, {"ignore-prefix": ["this."]}]
    }
}

0reactions

ShanonJacksoncommented, Apr 15, 2018

I second this, iv’e just found you’re library recently and have been really happy with no longer having to spam readonly declarations everywhere to remind my team not to mutate.

however having to constantly spam tslint:disable:no-object-mutation in constructors is giving me cancer, please fix this sometime soon :<

ignore prefix [this.] is not a solution as i only want to enable mutation in constructor not anywhere else

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