/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/** @type {?} */
const MAC_ENTER = 3;
/** @type {?} */
const BACKSPACE = 8;
/** @type {?} */
const TAB = 9;
/** @type {?} */
const NUM_CENTER = 12;
/** @type {?} */
const ENTER = 13;
/** @type {?} */
const SHIFT = 16;
/** @type {?} */
const CONTROL = 17;
/** @type {?} */
const ALT = 18;
/** @type {?} */
const PAUSE = 19;
/** @type {?} */
const CAPS_LOCK = 20;
/** @type {?} */
const ESCAPE = 27;
/** @type {?} */
const SPACE = 32;
/** @type {?} */
const PAGE_UP = 33;
/** @type {?} */
const PAGE_DOWN = 34;
/** @type {?} */
const END = 35;
/** @type {?} */
const HOME = 36;
/** @type {?} */
const LEFT_ARROW = 37;
/** @type {?} */
const UP_ARROW = 38;
/** @type {?} */
const RIGHT_ARROW = 39;
/** @type {?} */
const DOWN_ARROW = 40;
/** @type {?} */
const PLUS_SIGN = 43;
/** @type {?} */
const PRINT_SCREEN = 44;
/** @type {?} */
const INSERT = 45;
/** @type {?} */
const DELETE = 46;
/** @type {?} */
const ZERO = 48;
/** @type {?} */
const ONE = 49;
/** @type {?} */
const TWO = 50;
/** @type {?} */
const THREE = 51;
/** @type {?} */
const FOUR = 52;
/** @type {?} */
const FIVE = 53;
/** @type {?} */
const SIX = 54;
/** @type {?} */
const SEVEN = 55;
/** @type {?} */
const EIGHT = 56;
/** @type {?} */
const NINE = 57;
/** @type {?} */
const FF_SEMICOLON = 59;
// Firefox (Gecko) fires this for semicolon instead of 186
/** @type {?} */
const FF_EQUALS = 61;
// Firefox (Gecko) fires this for equals instead of 187
/** @type {?} */
const QUESTION_MARK = 63;
/** @type {?} */
const AT_SIGN = 64;
/** @type {?} */
const A = 65;
/** @type {?} */
const B = 66;
/** @type {?} */
const C = 67;
/** @type {?} */
const D = 68;
/** @type {?} */
const E = 69;
/** @type {?} */
const F = 70;
/** @type {?} */
const G = 71;
/** @type {?} */
const H = 72;
/** @type {?} */
const I = 73;
/** @type {?} */
const J = 74;
/** @type {?} */
const K = 75;
/** @type {?} */
const L = 76;
/** @type {?} */
const M = 77;
/** @type {?} */
const N = 78;
/** @type {?} */
const O = 79;
/** @type {?} */
const P = 80;
/** @type {?} */
const Q = 81;
/** @type {?} */
const R = 82;
/** @type {?} */
const S = 83;
/** @type {?} */
const T = 84;
/** @type {?} */
const U = 85;
/** @type {?} */
const V = 86;
/** @type {?} */
const W = 87;
/** @type {?} */
const X = 88;
/** @type {?} */
const Y = 89;
/** @type {?} */
const Z = 90;
/** @type {?} */
const META = 91;
// WIN_KEY_LEFT
/** @type {?} */
const MAC_WK_CMD_LEFT = 91;
/** @type {?} */
const MAC_WK_CMD_RIGHT = 93;
/** @type {?} */
const CONTEXT_MENU = 93;
/** @type {?} */
const NUMPAD_ZERO = 96;
/** @type {?} */
const NUMPAD_ONE = 97;
/** @type {?} */
const NUMPAD_TWO = 98;
/** @type {?} */
const NUMPAD_THREE = 99;
/** @type {?} */
const NUMPAD_FOUR = 100;
/** @type {?} */
const NUMPAD_FIVE = 101;
/** @type {?} */
const NUMPAD_SIX = 102;
/** @type {?} */
const NUMPAD_SEVEN = 103;
/** @type {?} */
const NUMPAD_EIGHT = 104;
/** @type {?} */
const NUMPAD_NINE = 105;
/** @type {?} */
const NUMPAD_MULTIPLY = 106;
/** @type {?} */
const NUMPAD_PLUS = 107;
/** @type {?} */
const NUMPAD_MINUS = 109;
/** @type {?} */
const NUMPAD_PERIOD = 110;
/** @type {?} */
const NUMPAD_DIVIDE = 111;
/** @type {?} */
const F1 = 112;
/** @type {?} */
const F2 = 113;
/** @type {?} */
const F3 = 114;
/** @type {?} */
const F4 = 115;
/** @type {?} */
const F5 = 116;
/** @type {?} */
const F6 = 117;
/** @type {?} */
const F7 = 118;
/** @type {?} */
const F8 = 119;
/** @type {?} */
const F9 = 120;
/** @type {?} */
const F10 = 121;
/** @type {?} */
const F11 = 122;
/** @type {?} */
const F12 = 123;
/** @type {?} */
const NUM_LOCK = 144;
/** @type {?} */
const SCROLL_LOCK = 145;
/** @type {?} */
const FIRST_MEDIA = 166;
/** @type {?} */
const FF_MINUS = 173;
/** @type {?} */
const MUTE = 173;
// Firefox (Gecko) fires 181 for MUTE
/** @type {?} */
const VOLUME_DOWN = 174;
// Firefox (Gecko) fires 182 for VOLUME_DOWN
/** @type {?} */
const VOLUME_UP = 175;
// Firefox (Gecko) fires 183 for VOLUME_UP
/** @type {?} */
const FF_MUTE = 181;
/** @type {?} */
const FF_VOLUME_DOWN = 182;
/** @type {?} */
const LAST_MEDIA = 183;
/** @type {?} */
const FF_VOLUME_UP = 183;
/** @type {?} */
const SEMICOLON = 186;
// Firefox (Gecko) fires 59 for SEMICOLON
/** @type {?} */
const EQUALS = 187;
// Firefox (Gecko) fires 61 for EQUALS
/** @type {?} */
const COMMA = 188;
/** @type {?} */
const DASH = 189;
// Firefox (Gecko) fires 173 for DASH/MINUS
/** @type {?} */
const SLASH = 191;
/** @type {?} */
const APOSTROPHE = 192;
/** @type {?} */
const TILDE = 192;
/** @type {?} */
const OPEN_SQUARE_BRACKET = 219;
/** @type {?} */
const BACKSLASH = 220;
/** @type {?} */
const CLOSE_SQUARE_BRACKET = 221;
/** @type {?} */
const SINGLE_QUOTE = 222;
/** @type {?} */
const MAC_META = 224;

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/**
 * Checks whether a modifier key is pressed.
 * @param {?} event Event to be checked.
 * @param {...?} modifiers
 * @return {?}
 */
function hasModifierKey(event, ...modifiers) {
    if (modifiers.length) {
        return modifiers.some((/**
         * @param {?} modifier
         * @return {?}
         */
        modifier => event[modifier]));
    }
    return event.altKey || event.shiftKey || event.ctrlKey || event.metaKey;
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

export { MAC_ENTER, BACKSPACE, TAB, NUM_CENTER, ENTER, SHIFT, CONTROL, ALT, PAUSE, CAPS_LOCK, ESCAPE, SPACE, PAGE_UP, PAGE_DOWN, END, HOME, LEFT_ARROW, UP_ARROW, RIGHT_ARROW, DOWN_ARROW, PLUS_SIGN, PRINT_SCREEN, INSERT, DELETE, ZERO, ONE, TWO, THREE, FOUR, FIVE, SIX, SEVEN, EIGHT, NINE, FF_SEMICOLON, FF_EQUALS, QUESTION_MARK, AT_SIGN, A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, META, MAC_WK_CMD_LEFT, MAC_WK_CMD_RIGHT, CONTEXT_MENU, NUMPAD_ZERO, NUMPAD_ONE, NUMPAD_TWO, NUMPAD_THREE, NUMPAD_FOUR, NUMPAD_FIVE, NUMPAD_SIX, NUMPAD_SEVEN, NUMPAD_EIGHT, NUMPAD_NINE, NUMPAD_MULTIPLY, NUMPAD_PLUS, NUMPAD_MINUS, NUMPAD_PERIOD, NUMPAD_DIVIDE, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, NUM_LOCK, SCROLL_LOCK, FIRST_MEDIA, FF_MINUS, MUTE, VOLUME_DOWN, VOLUME_UP, FF_MUTE, FF_VOLUME_DOWN, LAST_MEDIA, FF_VOLUME_UP, SEMICOLON, EQUALS, COMMA, DASH, SLASH, APOSTROPHE, TILDE, OPEN_SQUARE_BRACKET, BACKSLASH, CLOSE_SQUARE_BRACKET, SINGLE_QUOTE, MAC_META, hasModifierKey };
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