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- export declare const hasOwnProperty: (v: PropertyKey) => boolean;
- /**
- * Simpler helper method to check for a boolean type simply for the benefit of
- * gaining better compression when minified by not needing to have multiple
- * `typeof` comparisons in the codebase.
- */
- export declare function isBoolean(value: unknown): value is boolean;
- /**
- * Truncates the `str` at `len - ellipsisChars.length`, and adds the `ellipsisChars` to the
- * end of the string (by default, two periods: '..'). If the `str` length does not exceed
- * `len`, the string will be returned unchanged.
- *
- * @param {String} str The string to truncate and add an ellipsis to.
- * @param {Number} truncateLen The length to truncate the string at.
- * @param {String} [ellipsisChars=...] The ellipsis character(s) to add to the end of `str`
- * when truncated. Defaults to '...'
- */
- export declare function ellipsis(str: string, truncateLen: number, ellipsisChars?: string): string;
- /**
- * Removes array elements based on a filtering function. Mutates the input
- * array.
- *
- * Using this instead of the ES5 Array.prototype.filter() function to prevent
- * creating many new arrays in memory for filtering.
- *
- * @param arr The array to remove elements from. This array is mutated.
- * @param fn The predicate function which should return `true` to remove an
- * element.
- */
- export declare function removeWithPredicate<T>(arr: T[], fn: (item: T) => boolean): void;
- /**
- * Function that should never be called but is used to check that every
- * enum value is handled using TypeScript's 'never' type.
- */
- export declare function assertNever(theValue: never): never;
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