CoCalc -- conditionals.js

Summer of Sage Days 2015: San Diego (sd64.25), etc.
react / wstein / node_modules / jest-cli / node_modules / istanbul / node_modules / handlebars / node_modules / uglify-js / test / compress / conditionals.js
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ifs_1: {
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    options = {
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        conditionals: true
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    };
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    input: {
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        if (foo) bar();
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        if (!foo); else bar();
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        if (foo); else bar();
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        if (foo); else;
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    }
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    expect: {
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        foo&&bar();
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        foo&&bar();
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        foo||bar();
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        foo;
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    }
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}
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ifs_2: {
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    options = {
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        conditionals: true
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    };
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    input: {
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        if (foo) {
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            x();
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        } else if (bar) {
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            y();
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        } else if (baz) {
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            z();
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        }
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        if (foo) {
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            x();
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        } else if (bar) {
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            y();
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        } else if (baz) {
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            z();
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        } else {
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            t();
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        }
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    }
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    expect: {
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        foo ? x() : bar ? y() : baz && z();
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        foo ? x() : bar ? y() : baz ? z() : t();
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    }
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}
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ifs_3_should_warn: {
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    options = {
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        conditionals : true,
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        dead_code    : true,
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        evaluate     : true,
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        booleans     : true
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    };
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    input: {
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        if (x && !(x + "1") && y) { // 1
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            var qq;
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            foo();
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        } else {
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            bar();
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        }
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        if (x || !!(x + "1") || y) { // 2
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            foo();
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        } else {
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            var jj;
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            bar();
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        }
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    }
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    expect: {
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        var qq; bar();          // 1
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        var jj; foo();          // 2
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    }
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}
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ifs_4: {
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    options = {
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        conditionals: true
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    };
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    input: {
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        if (foo && bar) {
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            x(foo)[10].bar.baz = something();
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        } else
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            x(foo)[10].bar.baz = something_else();
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    }
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    expect: {
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        x(foo)[10].bar.baz = (foo && bar) ? something() : something_else();
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    }
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}
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ifs_5: {
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    options = {
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        if_return: true,
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        conditionals: true,
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        comparisons: true,
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    };
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    input: {
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        function f() {
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            if (foo) return;
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            bar();
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            baz();
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        }
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        function g() {
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            if (foo) return;
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            if (bar) return;
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            if (baz) return;
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            if (baa) return;
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            a();
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            b();
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        }
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    }
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    expect: {
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        function f() {
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            if (!foo) {
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                bar();
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                baz();
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            }
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        }
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        function g() {
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            if (!(foo || bar || baz || baa)) {
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                a();
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                b();
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            }
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        }
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    }
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}
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ifs_6: {
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    options = {
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        conditionals: true,
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        comparisons: true
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    };
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    input: {
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        if (!foo && !bar && !baz && !boo) {
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            x = 10;
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        } else {
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            x = 20;
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        }
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    }
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    expect: {
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        x = foo || bar || baz || boo ? 20 : 10;
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    }
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}
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