parseKeyValuePairs()

parseKeyValuePairs(input, pairSeparator, keyValueSeparator): Record<string, string>

Parses a string containing key-value pairs into an object.

💎 Why is this a Hidden Gem?

URLSearchParams is limited to URL-encoded & pairs. This handles connection strings, cookies, and any custom key=value format.

note

Trims keys and values automatically. Ignores malformed pairs (empty key or value).

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Parameters

input: string = ""

The input string to parse.

pairSeparator: string = ","

The separator between pairs. Defaults to ",".

keyValueSeparator: string = "="

The separator between key and value. Defaults to "=".

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Returns: Record<string, string>

The object containing parsed key-value pairs.

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Default Value

","

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Default Value

"="

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Since

1.0.0

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Example

parseKeyValuePairs('name=John,age=30');
// => { name: 'John', age: '30' }

parseKeyValuePairs('name:John;age:30', ';', ':');
// => { name: 'John', age: '30' }

parseKeyValuePairs('key=value&other=data', '&');
// => { key: 'value', other: 'data' }

parseKeyValuePairs(' name = John , age = 30 ');
// => { name: 'John', age: '30' }

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How it works?

Parses a string containing key-value pairs into an object.

Processing Flow

Common Inputs

Input	Pair Sep	KV Sep	Result
'name=John,age=30'	,	=	{name: 'John', age: '30'}
'name:John;age:30'	;	:	{name: 'John', age: '30'}
'key=value&other=data'	&	=	{key: 'value', other: 'data'}
' name = John '	,	=	{name: 'John'}

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Use Cases

Parse connection strings 📌

Convert key=value strings into a configuration object. Perfect for parsing database connection strings or DSN formats.

#parse#connection#strings#configuration#database#DSN

const connection = parseKeyValuePairs('host=localhost;port=5432;db=myapp', ';');
// { host: 'localhost', port: '5432', db: 'myapp' }

Parse query strings

Handle standard URL query formats without using URLSearchParams. Useful for SSR or environments where URL APIs are unavailable.

#parse#query#strings#URL#parameters#SSR

const params = parseKeyValuePairs('page=1&sort=desc&filter=active', '&');
// { page: '1', sort: 'desc', filter: 'active' }

Parse cookie strings

Extract key-value pairs from cookie headers.

#parse#cookies#headers#key-value#extraction#HTTP

const cookies = parseKeyValuePairs('session=abc123; theme=dark; lang=en', '; ');
// { session: 'abc123', theme: 'dark', lang: 'en' }