trimStart()

trimStart(str): string

Removes leading whitespace from a string.

DEPRECATED

Use string.trimStart() directly instead.

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Parameters

str: string | null | undefined

The string to trim.

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Returns: string

The trimmed string.

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See Also

• String.trimStart() - MDN
• Browser support - Can I Use

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Since

2.0.0

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Also known as

trimStart (Lodash, es-toolkit, Effect, Modern Dash) · ❌ (Remeda, Radashi, Ramda, Antfu)

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Example

// ❌ Deprecated approach
trimStart('  hello  ');  // => 'hello  '

// ✅ Recommended approach
'  hello  '.trimStart();  // => 'hello  '

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How it works?

Removes whitespace from start of string. Deprecated: Use string.trimStart() directly (ES2019).

Native Equivalent

// ❌ trimStart(str)
// ✅ str.trimStart()

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Use Cases

Trim leading whitespace 📌

Remove leading whitespace.

#trim#start#left#whitespace

'  hello  '.trimStart();  // 'hello  '

Clean input

Normalize user input.

#clean#input#normalize#whitespace

const cleaned = input.trimStart();