typescript-is | TypeScript transformer that generates run-time type-checks | Serialization library

by woutervh- TypeScript Version: 0.20.0 License: MIT

X-Ray Key Features Code Snippets Community Discussions(6)Vulnerabilities Install Support

kandi X-RAY | typescript-is Summary

typescript-is is a TypeScript library typically used in Utilities, Serialization, Transformer applications. typescript-is has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

TypeScript transformer that generates run-time type-checks.

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Quality

Security

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Support

typescript-is has a low active ecosystem.

It has 720 star(s) with 31 fork(s). There are 6 watchers for this library.

It had no major release in the last 12 months.

There are 29 open issues and 61 have been closed. On average issues are closed in 47 days. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of typescript-is is 0.20.0

Quality

typescript-is has 0 bugs and 0 code smells.

Security

typescript-is has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

typescript-is code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

typescript-is is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

typescript-is releases are available to install and integrate.

Installation instructions are not available. Examples and code snippets are available.

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typescript-is Key Features

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typescript-is Examples and Code Snippets

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Community Discussions

Trending Discussions on typescript-is

Convert number literal type to string literal type

TypeScript: Issues with KeyboardEvent/Event type and addEventListener

How to use redux toolkit in SPFX (typescript) project?

Best way to set keys and default value of an object based on values from an array in Typescript?

Typescript Decorator gets called twice

React Typescript hook error - This expression is not callable

QUESTION

Convert number literal type to string literal type

Asked 2022-Apr-04 at 14:31

I've seen questions about converting string literal types to number types (TypeScript: is there a way to convert a string literal type to a number type?), but not the other way around. Is there a way to define a type type NumberToString such that e.g. NumberToString<42> is 42?

The purpose of this is to provide a return type for Object.keys (in cases where I'm really, really sure that there are no extra properties).

...

ANSWER

Answered 2022-Apr-04 at 14:31

Much much much simpler now with template literal types:

Source https://stackoverflow.com/questions/71739021

QUESTION

TypeScript: Issues with KeyboardEvent/Event type and addEventListener

Asked 2021-Sep-22 at 12:45

I've coded a React burger menu that operates properly using regular JS/JSX but not with TS/TSX.

The issue lies in my choice of type for the keydown event (as an argument for the keyboardHandler function), showing this error:

No overload matches this call. Overload 1 of 2, '(type: "keydown", listener: (this: Document, ev: KeyboardEvent) => any, options?: boolean | AddEventListenerOptions | undefined): void', gave the following error. Argument of type '(e: KeyboardEvent) => void' is not assignable to parameter of type '(this: Document, ev: KeyboardEvent) => any'. Types of parameters 'e' and 'ev' are incompatible. Type 'KeyboardEvent' is missing the following properties from type 'KeyboardEvent': locale, nativeEvent, isDefaultPrevented, isPropagationStopped, persist

Overload 1 of 2 is linked to keyboardHandler's subscription by the addEventListener upon component's mounting, overload 2 of 2 is linked its unsubscription upon unmounting.

...

ANSWER

Answered 2021-Sep-22 at 12:45

Solution found here, thanks to aim97: How to detect key pressed in TypeScript?

All I had to do was add this interface on top of my code:

Source https://stackoverflow.com/questions/69284145

QUESTION

How to use redux toolkit in SPFX (typescript) project?

Asked 2021-Jul-29 at 15:09

I'm building some SPFX components (typescript + webpack based).

I'd like to include redux toolkit in the project, but it break compilation.

What I did :

scaffolded the project using yo
installed redux react-redux and @reduxjs/toolkit (using pnpm if it matters)
followed the Redux Toolkit TypeScript Quick Start by creating the file store.ts with this content :

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ANSWER

Answered 2021-Jul-29 at 15:09

I found the solution.

The root cause is due to the syntax used in react redux which requires typescript 3.8 or later.

Specifically, import type wasn't allow before.

The SPFX projects are scaffolded with a dependency to typescript 3.7.

The solution is then to upgrade the build tools of SPFX projects :

Source https://stackoverflow.com/questions/68576844

QUESTION

Best way to set keys and default value of an object based on values from an array in Typescript?

Asked 2021-Jun-18 at 07:02

I am new to TypeScript and feel like I am missing something.

What I want to do:

I want to make an object emptyEntry with all properties being an empty list instead of undefined at first
I know which properties I will be needing, these properties are the name properties of an Array arr
Eventually, I want to be able to push elements to the properties of Entry
I want to be as strict as possible and use Typescript in an optimal way

...

ANSWER

Answered 2021-Jun-18 at 07:02

Creating a class with the key1, key2, etc., as automatically included members won't work, because mapped types (which you're using for Entry) aren't compatible with classes. (A class could implements a mapped type, but it would have to explicitly set out every member from the mapping.)

The key issue I see in terms of TypeScript-ness is that the arrays are typed as object[] instead of something more specific. If you will know the shape of the object items in these arrays in advance, you should definitely type them specifically. If you won't, it may be safer to type them as unknown[] and make casts based on runtime tests.

Assuming unknown[] for now, here's a version of your code with a few things cleaned up to be more TypeScript idiomatic (using the Record utility type and for...of, plus not accepting the keys as an argument to createObject since they should only ever be the keys from arr):

Source https://stackoverflow.com/questions/68029783

QUESTION

Typescript Decorator gets called twice

Asked 2020-Jul-12 at 21:15

I created an issue report with Typescript because I'm pretty sure this is a bug, but I wanted to check here as well just in case anyone had additional insight.

This is what is happening. When the following code is run:

...

ANSWER

Answered 2020-Jul-12 at 21:15

The assumption that the decorator is called twice based on logs is wrong.

In current source:

Source https://stackoverflow.com/questions/62866171

QUESTION

React Typescript hook error - This expression is not callable

Asked 2020-May-01 at 13:55

im having this issue since i moved the code from React Javascript to React Typescript

I have this simple hook that switch state from on/off (or true false) (code below) I'm struggling into this since this code were working on Javascript

Code here to test it

So the toggle function has some error but cannot figure it out. Some help would be much appreciated

...

ANSWER

Answered 2020-May-01 at 13:55

Two changes you need to do to solve the problem

First, to get rid of the error you need to return the value with const assertion like

Source https://stackoverflow.com/questions/61543626

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install typescript-is

You can download it from GitHub.

Support

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