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export var isShiftPressed = false; |
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export var isCtrlPressed = false; |
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4
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export function isHtmlElement(object) { |
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return object instanceof HTMLElement; |
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} |
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export function initHelpers() { |
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document.addEventListener('keydown', event => handleKeyDown(event)); |
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document.addEventListener('keyup', event => handleKeyUp(event)); |
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} |
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export function onReady(fn) { |
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if (document.readyState != 'loading') { |
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fn(); |
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} else { |
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document.addEventListener('DOMContentLoaded', fn); |
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} |
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} |
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export function assigned(obj) { |
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return !(typeof obj === 'undefined' || obj === null); |
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} |
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function handleKeyDown(event) { |
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handleKeyToggle(event, true); |
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} |
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function handleKeyUp(event) { |
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handleKeyToggle(event, false); |
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} |
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function handleKeyToggle(event, isPressed) { |
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if (event.key === 'Shift') { |
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isShiftPressed = isPressed; |
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} else if (event.key === 'Control') { |
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isCtrlPressed = isPressed; |
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} |
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} |
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export function findTextNodes(baseNode) { |
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if (!assigned(baseNode)) { |
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baseNode = document.documentElement; |
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} |
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let walker = document.createTreeWalker(baseNode, NodeFilter.SHOW_TEXT, null, false); |
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let node; |
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let results = []; |
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while (node = walker.nextNode()) { |
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results.push(node); |
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} |
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53
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return results; |
54
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} |
This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.
To learn more about declaring variables in Javascript, see the MDN.