test.ts.lint

[typescript]: >= 2.4.0

async function promiseFunc() {
    return false;
}

normalExpression = promiseFunc();
const stringLiteral = "text" + promiseFunc();

const globalUnaryExpression = !!promiseFunc();
                                ~~~~~~~~~~~~~  [0]

const globalBinaryExpression = "text" && promiseFunc();
                                         ~~~~~~~~~~~~~  [0]

promiseFunc() && console.log("topLevelBinaryExpression");
~~~~~~~~~~~~~                        [0]

function funky(maybePromise?: Promise<number>) {
    while (promiseFunc() && maybePromise) {
           ~~~~~~~~~~~~~                    [0]

        const binaryExpression = (promiseFunc() && "1") || ("1" && !promiseFunc()) ? ("1" && promiseFunc() ? "1" : "1") : maybePromise;
                                  ~~~~~~~~~~~~~                                                                                        [0]
                                                                    ~~~~~~~~~~~~~                                                      [0]
                                                                                      ~~~~~~~~~~~~~~~~~~~~                             [0]
                                                                                             ~~~~~~~~~~~~~                             [0]

        // For-loop
        for (let index = 0; promiseFunc(); index++) {
                            ~~~~~~~~~~~~~             [0]

            // a non-promise
            if ("just some text" + promiseFunc()) {

            // Promise literal
            } else if (new Promise(() => { })) {
                       ~~~~~~~~~~~~~~~~~~~~~~    [0]

                // Nested Promise
                if (promiseFunc()) {
                    ~~~~~~~~~~~~~    [0]
                }

            // Parenthesized Expression + Exclamation Tokens
            } else if (promiseFunc() && !!promiseFunc()) {
                       ~~~~~~~~~~~~~                      [0]
                                          ~~~~~~~~~~~~~   [0]
            }
        }
    }
}

[0]: Promises are not allowed as boolean.