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export const strictEquality = (a, b) => a === b; /** * Determine if two cartesian coordinate offsets are equal * @param offsetA * @param offsetB */ export function areCoordsEqual(offsetA, offsetB) { if (!offsetA && !offsetB) { return true; } else if (!offsetA || !offsetB) { return false; } else { return offsetA.x === offsetB.x && offsetA.y === offsetB.y; } } /** * Determines if two arrays of items are equal * @param a The first array of items * @param b The second array of items */ export function areArraysEqual(a, b, isEqual = strictEquality) { if (a.length !== b.length) { return false; } for (let i = 0; i < a.length; ++i) { if (!isEqual(a[i], b[i])) { return false; } } return true; }