05. Check for Symmetry - js advanced

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 it('return true for valid symmetric input', () => {
        expect(isSymmetric([1, 1])).to.true
    })

    it('return false for valid non-symmetric input', () => {
        expect(isSymmetric([1, 2])).to.false
    })

    it('return false for invalid argument', () => {
        expect(isSymmetric('a')).to.false
    })

    it('return false for type-coerced elements', () => {
        expect(isSymmetric(['1', 1])).to.false
    })