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如果私有成员从未在构造函数之外进行修改,则要求将其标记为“只读”。
- // code-linter.json5
- {
- "rules": {
- "@typescript-eslint/prefer-readonly": "error"
- }
- }
- export class Container {
- // Public members might be modified externally
- public publicMember: boolean = true;
-
- // Protected members might be modified by child classes
- protected protectedMember: number = Number.MAX_VALUE;
-
- // This is modified later on by the class
- private modifiedLater = 'unchanged';
-
- public mutate() {
- this.modifiedLater = 'mutated';
- }
- }
- export class Container {
- // These member variables could be marked as readonly
- private neverModifiedMember = true;
-
- private onlyModifiedInConstructor: number;
-
- // Private parameter properties can also be marked as readonly
- private neverModifiedParameter: string;
-
- public constructor(
- onlyModifiedInConstructor: number,
- // Private parameter properties can also be marked as readonly
- neverModifiedParameter: string,
- ) {
- this.neverModifiedParameter = neverModifiedParameter;
- this.onlyModifiedInConstructor = onlyModifiedInConstructor;
- }
- }
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