javascript - Kononov Space

javascript

A collection of 7 posts

[RECIPE]: fix vulnerable sub-dependencies in package.json

[RECIPE]: fix vulnerable sub-dependencies in package.json

Regular Typescript or Javascript project has number of dependencies from NPM. Most of them have own dependencies, different versions of them. To see them all you can review auto generated file package-lock.json. Different versions of some library can be used in range of other libraries. Which can cause dependencies

Mighty @Decorators in Typescript - what could we get out of it?

Mighty @Decorators in Typescript - what could we get out of it?

Every Angular developer has seen decorators in Typescript code. We use it to define Module (hopefully, will not use modules in future but anyway), to configure dependency injection or component properties. In other words, We use it to put some additional information, or metadata, for the compiler. Angular is just

Runtime Type Safety in Typescript (Возможна ли удобная проверка типов в рантайме)

Runtime Type Safety in Typescript (Возможна ли удобная проверка типов в рантайме)

Относительная простота и доступность Javascript, относительная легкость входа в него предопределила на многие годы вперед его популярность. Некоторые языки программирования существенно повлияли на развитие всей отрасли в целом. Так, например SmallTalk стал неким прадедушкой ООП и объектного подхода, хоть сам по себе мало где используется. А Javascript... на мой взгляд

[RECIPE]: Callstack in Javascript

[RECIPE]: Callstack in Javascript

When debugging legacy javascript code you might need to know who called this function. The simple solution for it - using Error Object, which has stack information. console.log(new Error('Stack Trace').stack)

[RECIPE]: bootstrapSwitch events firing

[RECIPE]: bootstrapSwitch events firing

If you by any chance still have jQuery and use things like bootstrapSwitch, you can meet this situation: When switch is setup like this $('id').bootstrapSwitch('state', true) you immediately can observe that switchChange is fired. Which could be normal, not a big deal. But if you have system of

[Recipe]: Save Canvas content to File on server

[Recipe]: Save Canvas content to File on server

Save to File If you have some logic with images, drawing or blurring in javascript, you might want to save image back to server. Here is how to use toBlob function: const canvas = document.getElementById("canvasID"); canvas.toBlob(bytes => { // here is saving of actual image file content save(bytes); }); save