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Glot is a fast Rust-based CLI tool for checking internationalization (i18n) issues in Next.js projects using next-intl. It helps you catch hardcoded text that should use translation functions, find missing translation keys, and identify unused translations.

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Key Features

Hardcoded Text Detection

Find untranslated text in JSX/TSX files that should use i18n translation functions

Missing Key Detection

Identify translation keys used in code but missing from your locale files

Orphan Key Detection

Find unused translation keys defined in locale files but never used in code

Multi-language Support

Detects text in any language using Unicode alphabetic character detection

AI Integration

MCP server for AI agents like Claude to analyze and fix i18n issues

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Why Glot?

  • Fast: Built in Rust using the same parser as Next.js (swc)
  • Accurate: Understands JSX/TSX syntax and next-intl patterns
  • Configurable: Customize detection rules, ignored patterns, and checked attributes
  • CI-friendly: Perfect for automated pipelines with exit codes and structured output

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How It Works

Glot parses your TSX/JSX files using the swc AST parser and visits each node to detect:
  1. Text content in JSX elements: <button>Submit</button>
  2. String expressions: <div>{"Hello"}</div>
  3. Conditional text: {loading ? "Loading..." : "Done"}
  4. Attribute values: <input placeholder="Enter email" />
Any text containing at least one Unicode alphabetic character is flagged as potentially hardcoded.

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Quick Example

# Check your project for i18n issues
npx glot check

# Output:
# error: "Submit"  hardcoded-text
#   --> ./src/components/Button.tsx:5:22
#   |
# 5 |     return <button>Submit</button>;
#   |                    ^
#
# ✖ 1 problem (1 error, 0 warnings)

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Next Steps

Quick Start

Install glot and run your first i18n check in 2 minutes