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1 | import { Observable } from '../Observable';
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2 | import { OperatorFunction } from '../types';
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3 | /**
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4 | * Returns an Observable that emits whether or not every item of the source satisfies the condition specified.
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5 | *
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6 | * ## Example
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7 | * A simple example emitting true if all elements are less than 5, false otherwise
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8 | * ```ts
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9 | * import { of } from 'rxjs';
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10 | * import { every } from 'rxjs/operators';
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11 | *
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12 | * of(1, 2, 3, 4, 5, 6).pipe(
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13 | * every(x => x < 5),
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14 | * )
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15 | * .subscribe(x => console.log(x)); // -> false
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16 | * ```
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17 | *
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18 | * @param {function} predicate A function for determining if an item meets a specified condition.
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19 | * @param {any} [thisArg] Optional object to use for `this` in the callback.
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20 | * @return {Observable} An Observable of booleans that determines if all items of the source Observable meet the condition specified.
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21 | * @method every
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22 | * @owner Observable
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23 | */
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24 | export declare function every<T>(predicate: (value: T, index: number, source: Observable<T>) => boolean, thisArg?: any): OperatorFunction<T, boolean>;
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