issue979_reported: {
    options = {
        booleans: true,
        comparisons: true,
        conditionals: true,
        dead_code: true,
        evaluate: true,
        hoist_funs: true,
        if_return: true,
        join_vars: true,
        keep_fargs: true,
        loops: true,
        properties: true,
        sequences: true,
        side_effects: true,
        unused: true,
    }
    input: {
        function f1() {
            if (a == 1 || b == 2) {
                foo();
            }
        }
        function f2() {
            if (!(a == 1 || b == 2)) {
            }
            else {
                foo();
            }
        }
    }
    expect: {
        function f1() {
            1!=a&&2!=b||foo();
        }
        function f2() {
            1!=a&&2!=b||foo();
        }
    }
}

issue979_test_negated_is_best: {
    options = {
        booleans: true,
        comparisons: true,
        conditionals: true,
        dead_code: true,
        evaluate: true,
        hoist_funs: true,
        if_return: true,
        join_vars: true,
        keep_fargs: true,
        loops: true,
        properties: true,
        sequences: true,
        side_effects: true,
        unused: true,
    }
    input: {
        function f3() {
            if (a == 1 | b == 2) {
                foo();
            }
        }
        function f4() {
            if (!(a == 1 | b == 2)) {
            }
            else {
                foo();
            }
        }
        function f5() {
            if (a == 1 && b == 2) {
                foo();
            }
        }
        function f6() {
            if (!(a == 1 && b == 2)) {
            }
            else {
                foo();
            }
        }
        function f7() {
            if (a == 1 || b == 2) {
                foo();
            }
            else {
                return bar();
            }
        }
    }
    expect: {
        function f3() {
            1==a|2==b&&foo();
        }
        function f4() {
            1==a|2==b&&foo();
        }
        function f5() {
            1==a&&2==b&&foo();
        }
        function f6() {
            1!=a||2!=b||foo();
        }
        function f7() {
            if(1!=a&&2!=b)return bar();foo()
        }
    }
}