Error in TypeScript: Gulp + Browserify combination is not yielding the expected type

I keep encountering an error whenever I try to run this script. The error message I receive is:

-> % gulp compile-js [22:18:57] Using gulpfile ~/wwwdata/projects/site/gulpfile.js [22:18:57] Starting 'compile-js'...

events.js:141 throw er; // Unhandled 'error' event ^ TS1110: app/Resources/src/tsc/Material.ts(22,19): TS1110: Type expected.

The issue seems to be with line 22 of the script:

private _xhr: null | JQueryXHR;

When I change it to

private _xhr:any;

I encounter another error:

TS1005: app/Resources/src/tsc/Material.ts(147,33): TS1005: '=' expected.

This new error is triggered by the for loop in the following method:

/** load threads/comments for current loaded material */
getThreads() {

    /** if there is no more threads to load just exit the function */
    if(this.isMoreThreads == false) {
        return;
    }

    let url = Routing.generate('comments', {
        type: this.materialType,
        id: this.materialId,
        page: this.page
    });


    if (this._xhr) {
        this._xhr.abort();
    }

    this._xhr = $.ajax(url, {
        method: 'POST',
        beforeSend: () => {
        },
        success: (response) => {

            if(!(response.hasOwnProperty('threads'))) {
                this.isMoreThreads = false;
                $(document.getElementById('loadMoreThreads')).remove();
                return;
            }

            //for (let thread in response.threads) { // <- if change 'of' to 'in' then there is no error
            for (let thread of response.threads) {
                let thr = new MaterialThread(thread);
                this.addThread = thr;

                this._commentsContainer.append(thr.render());
            }
        },
        error: () => {
            let act = confirm('Error has occurred. Refresh page?');
            if (act === true) {
                window.location.reload();
            }
        },
        complete: () => {
            this._commentsContainer.find('#loading').fadeOut();
            this._xhr = null;
        }
    });
}

Here is the content of my gulpfile.js:

var tsconfig = {
    target: "es5",
    module: "commonjs",
    declaration: false,
    noImplicitAny: false,
    removeComments: true,
    noLib: false
};

gulp.task('compile-js', function() {
    var bundler = browserify({
        basedir: paths.typescript,
        debug: true,
    })
        .add(paths.typescript + '/index.ts')
        .plugin(tsify, tsconfig)
        .transform(debowerify);

    return bundler.bundle()
        .pipe(exorcist('/dupa/application.js.map'))
        .pipe(source('application.js'))
        .pipe(gulp.dest('/dupa'));
});

Answer №1

To fix the error TS1110 in your TypeScript code, don't forget to include the "exclude" property in your tsconfig file.

var tsconfig = {
    target: "es5",
    module: "commonjs",
    declaration: false,
    noImplicitAny: false,
    removeComments: true,
    noLib: false,
    "exclude": [
        "node_modules",
        "typings"
    ]
};

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