Below are some possible solutions to these exercises around create snippets in Visual Studio Code.

Basic Function

{
	"Basic Function": {
		"prefix": "func",
		"body": ["function ${1:functionName}(${2:parameters}): ${3:returnType} {", "\t${4}", "}"],
		"description": "Basic function declaration"
	}
}

Arrow Function

{
	"Arrow Function": {
		"prefix": "arrfunc",
		"body": ["const ${1:variableName} = (${2:parameters}): ${3:returnType} => {", "\t${4}", "};"],
		"description": "Basic arrow function declaration"
	}
}

Async Function

{
	"Async Function": {
		"prefix": "asyncfunc",
		"body": [
			"async function ${1:functionName}(${2:parameters}): Promise<${3:returnType}> {",
			"\t${4}",
			"}"
		],
		"description": "Asynchronous function declaration"
	}
}

Basic Class

{
	"Basic Class": {
		"prefix": "class",
		"body": ["class ${1:ClassName} {", "\tconstructor(${2:parameters}) {", "\t\t${3}", "\t}", "}"],
		"description": "Basic class declaration"
	}
}

Class Method

{
	"Class Method": {
		"prefix": "classmethod",
		"body": ["public ${1:methodName}(${2:parameters}): ${3:returnType} {", "\t${4}", "}"],
		"description": "Public method within a class"
	}
}

Private Property

{
	"Private Property": {
		"prefix": "privateprop",
		"body": ["private ${1:propertyName}: ${2:propertyType};"],
		"description": "Private property declaration in a class"
	}
}

Basic Import

{
	"Basic Import": {
		"prefix": "import",
		"body": ["import { ${1:module} } from '${2:path}';"],
		"description": "Basic import statement"
	}
}

Import All

{
	"Import All": {
		"prefix": "importall",
		"body": ["import * as ${1:alias} from '${2:path}';"],
		"description": "Import all modules with an alias"
	}
}

Type Alias

{
	"Type Alias": {
		"prefix": "typealias",
		"body": ["type ${1:TypeName} = ${2:Type};"],
		"description": "Type alias declaration"
	}
}

Promise

{
	"Promise": {
		"prefix": "promise",
		"body": ["new Promise<${1:Type}>((resolve, reject) => {", "\t${2}", "});"],
		"description": "Basic Promise structure"
	}
}

Basic Workspace Request

{
	"Basic fetch Request": {
		"prefix": "ffetch",
		"body": [
			"try {",
			"\tconst response = await fetch('${1:url}', {",
			"\t\tmethod: '${2|POST,PUT,PATCH,DELETE,GET|}',",
			"\t\tbody: ${3:JSON.stringify(data)}",
			"\t});",
			"\tconst data = await response.json();",
			"\tconsole.log(data);",
			"} catch (error) {",
			"\tconsole.error('Error fetching data:', error);",
			"}"
		],
		"description": "Basic fetch request with error handling"
	}
}

Import Default Export

{
	"Import Default Export": {
		"prefix": "importdef",
		"body": ["import ${1:defaultExport} from '${2:modulePath}';"],
		"description": "Import default export"
	}
}

Basic Express Route

{
	"Basic Express Route": {
		"prefix": "expressroute",
		"body": [
			"app.${1|get,post,put,patch,delete|}('${2:path}', (req: Request, res: Response, next: NextFunction) => {",
			"\t${3}",
			"\tres.send('${4:Hello World!}');",
			"});"
		],
		"description": "Basic Express route handler"
	}
}

Basic React Component

{
	"Basic React Component": {
		"prefix": "rc",
		"body": [
			"import React from 'react';",
			"",
			"interface ${1:Props} {}",
			"",
			"const ${2:ComponentName}: React.FC<${1:Props}> = ({}) => {",
			"\treturn (",
			"\t\t<div>",
			"\t\t\t${3}",
			"\t\t</div>",
			"\t);",
			"};",
			"",
			"export default ${2:ComponentName};"
		],
		"description": "Basic functional React component"
	}
}

File Header Snippet

{
	"File Header Snippet": {
		"prefix": "fileheader",
		"body": [
			"/**",
			" * File: $TM_FILENAME",
			" * Date: $CURRENT_YEAR-$CURRENT_MONTH-$CURRENT_DATE",
			" */"
		],
		"description": "Standard file header comment"
	}
}

Transform to Uppercase

{
	"Transform to Uppercase": {
		"prefix": "toupper",
		"body": [
			"const originalWord = "${1:word}";",
			"const upperCaseWord = "${1/(.*)/${1:/upcase}/}";"
		],
		"description": "Transform placeholder text to uppercase"
	}
}

Surround with try…catch

{
	"Surround with try/catch": {
		"prefix": "trycatch",
		"body": ["try {", "\t$TM_SELECTED_TEXT", "} catch (error) {", "\tconsole.error(error);", "}"],
		"description": "Wrap selected code with try/catch"
	}
}