Krzysztof Zawisła KrzysztofZawisla
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KrzysztofZawisla
/ typescript-extended-props-with-generics.tsx
Created
March 24, 2022 10:52
A cheat sheet to React with TypeScript, on how to extend props with props from the usage scope.
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| type ComponentWithGenericPropertiesBaseWithoutGeneric = { | |
| baseValue: string; | |
| }; | |
| type ComponentWithGenericPropertiesBase<T> = T extends infer T | |
| ? T & ComponentWithGenericPropertiesBaseWithoutGeneric | |
| : ComponentWithGenericPropertiesBaseWithoutGeneric; | |
| type ComponentWithGenericPropertiesFirstUnion = { | |
| valueFromFirstUnion: string; |
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| { | |
| "env": { | |
| "browser": true, | |
| "es2021": true, | |
| "jest/globals": true | |
| }, | |
| "extends": [ | |
| "plugin:testing-library/react", | |
| "eslint:recommended", | |
| "plugin:react/recommended", |
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| import { app } from "electron"; | |
| const memory: number = 8192; // memory in mb | |
| app.commandLine.appendSwitch("js-flags", `--max-old-space-size=${memory}`); |
KrzysztofZawisla
/ Golang prototype in webassembly
Created
August 30, 2019 18:25
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| func WasmQueryOn(this js.Value, args []js.Value) interface{} { | |
| if len(args) > 1 { | |
| selector := args[0] | |
| function := args[1] | |
| if function.Type() == js.TypeFunction && selector.Type() == js.TypeString { | |
| jsSelector := js.Global().Get("String").New(selector) | |
| firstLetter := jsSelector.Call("substr", 0, 1) | |
| firstLetterUpperCase := js.Global().Get("String").New(firstLetter).Call("toUpperCase") | |
| restOfWord := jsSelector.Call("substr", 1, selector.Length()-1) | |
| value := "on" + firstLetterUpperCase.String() + restOfWord.String() |