/* Code Comments */44 posts tagged with "typescript"
eslint: using overrides and file types
2021-03-05
|~3 min read
|439 words
When I wrote about using ESLint with Typescript previously, I assumed that the entire project would be using Typescript. There are plenty of…
automating linting: using husky and lint-staged
2021-03-05
|~6 min read
|1053 words
I’ve written in the past about updating a basic prettier config to handle multiple file types. I’ve also discussed using git hooks to ensure…
writing aws lambdas in typescript using sam
2021-03-05
|~2 min read
|344 words
I recently discovered AWS’s cli for managing serverless applications. On the face, this feels like a fantastic way to manage new…
debugging typescript in vs code
2021-03-05
|~4 min read
|650 words
Update: I wrote a follow up to this post that takes a slightly different approach by using source maps for better debugging and focuses on…
debugging a node cli written in typescript with vs code
2021-03-05
|~5 min read
|923 words
I’ve been writing recently about setting up projects with Typescript as well as Babel and ESLint. Those explorations, however, we all in…
getting typescript, babel, and eslint working together
2021-03-05
|~2 min read
|317 words
Previously, I wrote about getting Typescript set up for a new project. Today, I want to discuss adding Babel and ESLint to the mix. Getting…
typescript: constraining values with `keyof` and `enum`
2021-03-05
|~3 min read
|429 words
For a long time I was using s to limit the values I could use for accessing keys on an interface. This process, was unwieldy, however and…
typescript: indexing signatures
2021-03-05
|~4 min read
|695 words
I was working on a project recently where I wanted a generic approach to updating keys on an object. Type safety was being guaranteed at the…
typescript: tsconfig template
2021-03-05
|~5 min read
|869 words
I’ve written in the past about a simple boiler plate for node applications. Today, however, I want to talk about a more generic boiler…
typescript: type guards vs const assertions
2021-03-05
|~5 min read
|914 words
I was discussing a refactor for some types recently with a colleague when he suggested I use a assertion. There are several good articles…
typescript compiler options: lib vs. target
2021-03-05
|~3 min read
|423 words
I was setting up a new typescript project the other day when I realized that there were two compiler options that felt very similar: and…
standard tsconfig for node projects
2021-03-05
|~1 min read
|129 words
The following is a simple that I’ve found helpful when writing simple node applications. I’ve found myself copying and pasting it between…
standard tsconfig for node projects
2021-03-05
|~1 min read
|129 words
The following is a simple TSConfig that I’ve found helpful when writing simple node applications. I’ve found myself copying and pasting it…
instantiate class in typescript
2021-03-05
|~1 min read
|199 words
Tonight, had a real head scratcher: how to instantiate a class in Typescript that uses a constructor without a compiler error! In Vanilla JS…
instantiate class in typescript
2021-03-05
|~1 min read
|199 words
Tonight, had a real head scratcher: how to instantiate a class in Typescript that uses a constructor without a compiler error! In Vanilla JS…
typescript compiler options: lib vs. target
2021-03-05
|~2 min read
|222 words
I was setting up a new typescript project the other day when I realized that there were two compiler options that felt very similar: and…
typescript switch statement with enums
2021-03-05
|~1 min read
|199 words
We use Enums a lot in our Typescript code to make sure that we’re using a value that we expect. One way that we use the Enum is as the basis…
typescript switch statement with enums
2021-03-05
|~1 min read
|199 words
We use Enums a lot in our Typescript code to make sure that we’re using a value that we expect. One way that we use the Enum is as the basis…
using typescript playground to make sense of code
2021-03-05
|~1 min read
|162 words
I came across the following function in a codebase today and struggled to see what was happening - the combination of classes with…
using typescript playground to make sense of code
2021-03-05
|~1 min read
|161 words
I came across the following function in a codebase today and struggled to see what was happening - the combination of classes with…
property accessors and typescript
2021-03-05
|~1 min read
|198 words
Came across an interesting example of a rarely used feature (at least for me) in Javascript creating unexpected results with Typescript…
property accessors and typescript
2021-03-05
|~1 min read
|198 words
Came across an interesting example of a rarely used feature (at least for me) in Javascript creating unexpected results with Typescript…
creating subsets: object.entries, object.fromentries, and sets
2021-03-05
|~4 min read
|726 words
universe of options I want to highlight one way to create a subset of data. To get us started, let’s think about a universe of data. It’s a…
creating subsets: object.entries, object.fromentries, and sets
2021-03-05
|~4 min read
|724 words
I want to highlight one way to create a subset of data. To get us started, let’s think about a universe of data. It’s a circle. Everything…
usereducer with typescript
2021-03-05
|~6 min read
|1108 words
When does it make sense to use a reducer vs a simple state value with React’s Hooks? There’s no hard-and-fast rule, but the React team…
usereducer with typescript
2021-03-05
|~6 min read
|1108 words
When does it make sense to use a reducer vs a simple state value with React’s Hooks? There’s no hard-and-fast rule, but the React team…
typescript’s omit: pick’s mirror
2021-03-05
|~2 min read
|394 words
I’ve written in the past about the benefits of in writing better interfaces with Typescript. Today, I found out about ’s mirror: .1 Quick…
typescript’s omit: pick’s mirror
2021-03-05
|~2 min read
|394 words
I’ve written in the past about the benefits of in writing better interfaces with Typescript. Today, I found out about ’s mirror: .1 Quick…
default enums and fallbacks
2021-03-05
|~2 min read
|342 words
Working on a component that receives a prop where the status are defined by an enum (I’m working in Typescript). The problem arose when a…
default enums and fallbacks
2021-03-05
|~2 min read
|342 words
Working on a component that receives a prop where the status are defined by an enum (I’m working in Typescript). The problem arose when a…
typescript generics: a basic use case
2021-03-05
|~4 min read
|686 words
When does it make sense to use a Generic in a Typescript type? How do you create a type that takes a Generic? I’ve read through the…
typescript generics: a basic use case
2021-03-05
|~4 min read
|686 words
When does it make sense to use a Generic in a Typescript type? How do you create a type that takes a Generic? I’ve read through the…
using isvalidelement to ensure a node is an element in react
2021-03-05
|~2 min read
|312 words
I am trying to reduce an array of React Nodes to an array of React Elements. Specifically, I’m trying to extract the title prop from those…
using isvalidelement to ensure a node is an element in react
2021-03-05
|~2 min read
|312 words
I am trying to reduce an array of React Nodes to an array of React Elements. Specifically, I’m trying to extract the title prop from those…
using typescript’s pick to improve communication and decrease maintenance
2021-03-05
|~3 min read
|554 words
Instead of documenting an interface that is redundant, but only a partial, we can use to allow the interface to automatically be linked, w…
using typescript’s pick to improve communication and decrease maintenance
2021-03-05
|~3 min read
|555 words
Instead of documenting an interface that is redundant, but only a partial, we can use to allow the interface to automatically be linked, w…
`type[]` vs `array<type>`: what’s the difference?
2021-03-05
|~1 min read
|164 words
The short answer: there is no difference. When investigating, I was steered to the Typescript Handbook1 which notes: The type…
`type[]` vs `array<type>`: what’s the difference?
2021-03-05
|~1 min read
|164 words
The short answer: there is no difference. When investigating, I was steered to the Typescript Handbook1 which notes: The type…
lessons in typescript: extending 3rd party libraries and reading type definitions
2021-03-05
|~4 min read
|614 words
Using third party libraries is great when they do exactly what you want them to do. When it comes to extending them, however, it can get…
lessons in typescript: extending 3rd party libraries and reading type definitions
2021-03-05
|~4 min read
|614 words
Using third party libraries is great when they do exactly what you want them to do. When it comes to extending them, however, it can get…
higher order components in javascript / typescript
2021-03-05
|~2 min read
|342 words
Imagine you have a prop that you want to be passed all the way through to the DOM. If you try and pass through a prop that isn’t…
higher order components in javascript / typescript
2021-03-05
|~2 min read
|342 words
Imagine you have a prop that you want to be passed all the way through to the DOM. If you try and pass through a prop that isn’t…
`.d.ts` files and typescript interfaces
2021-03-05
|~2 min read
|218 words
The file is a declaration file. In this case, it’s a declaration file for Typescript files. What does that actually mean though? The…
`.d.ts` files and typescript interfaces
2021-03-05
|~2 min read
|220 words
The file is a declaration file. In this case, it’s a declaration file for Typescript files. What does that actually mean though? The…