lokalise-upgrade-migration

Analyze, plan, and execute Lokalise SDK upgrades with breaking change detection. Use when upgrading Lokalise SDK versions, detecting deprecations, or migrating to new API versions. Trigger with phrases like "upgrade lokalise", "lokalise migration", "lokalise breaking changes", "update lokalise SDK", "analyze lokalise version".

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name	lokalise-upgrade-migration
description	Analyze, plan, and execute Lokalise SDK upgrades with breaking change detection. Use when upgrading Lokalise SDK versions, detecting deprecations, or migrating to new API versions. Trigger with phrases like "upgrade lokalise", "lokalise migration", "lokalise breaking changes", "update lokalise SDK", "analyze lokalise version".
allowed-tools	Read, Write, Edit, Bash(npm:), Bash(npx:), Bash(git:), Bash(node:), Bash(grep:*), Grep
version	1.14.0
license	MIT
author	Jeremy Longshore <jeremy@intentsolutions.io>
tags	["saas","lokalise","api","migration"]
compatibility	Designed for Claude Code

Lokalise Upgrade Migration

Current State

!npm list @lokalise/node-api 2>/dev/null | grep lokalise || echo 'SDK not installed' !lokalise2 --version 2>/dev/null || echo 'CLI not installed' !node --version 2>/dev/null || echo 'Node.js not available' !cat package.json 2>/dev/null | grep -E '"type"|"module"' || echo 'No package.json type field'

Overview

Upgrade the @lokalise/node-api SDK between major versions with full breaking change detection, automated code transformation, and verification. The most significant migration is v8 (CommonJS) to v9+ (ESM-only), which requires changes to imports, module configuration, and potentially your build pipeline.

Prerequisites

Existing project using @lokalise/node-api (any version 6.x through 9.x)
Node.js 18+ for SDK v9 (Node.js 14+ for v8 and below)
Git repository with clean working tree (for safe rollback)
Test suite that exercises Lokalise API calls

Instructions

Step 1: Assess Current Version and Target

set -euo pipefail
echo "=== Current SDK Version ==="
CURRENT=$(npm list @lokalise/node-api --json 2>/dev/null | node -e "
  const d = JSON.parse(require('fs').readFileSync(0,'utf8'));
  const v = d.dependencies?.['@lokalise/node-api']?.version || 'not found';
  console.log(v);
")
echo "Installed: ${CURRENT}"

echo -e "\n=== Latest Available ==="
LATEST=$(npm view @lokalise/node-api version)
echo "Latest: ${LATEST}"

echo -e "\n=== All Major Versions ==="
npm view @lokalise/node-api versions --json | node -e "
  const versions = JSON.parse(require('fs').readFileSync(0,'utf8'));
  const majors = {};
  versions.forEach(v => { const m = v.split('.')[0]; majors[m] = v; });
  Object.entries(majors).forEach(([m, v]) => console.log('  v' + m + '.x latest: ' + v));
"

Step 2: Review Breaking Changes by Version

Version	Node.js	Module System

set -euo pipefail
grep -rn "require.*lokalise\|from.*lokalise" --include="*.ts" --include="*.js" --include="*.mjs" . || echo "No imports found"

// BEFORE (v8 CommonJS)
const { LokaliseApi } = require('@lokalise/node-api');
const lok = new LokaliseApi({ apiKey: process.env.LOKALISE_API_TOKEN });

// AFTER (v9 ESM)
import { LokaliseApi } from '@lokalise/node-api';
const lok = new LokaliseApi({ apiKey: process.env.LOKALISE_API_TOKEN });

{
  "type": "module"
}

{
  "compilerOptions": {
    "module": "ES2022",
    "moduleResolution": "bundler",
    "target": "ES2022"
  }
}

// BEFORE (v6 offset pagination)
const keys = await lok.keys().list({
  project_id: projectId,
  page: 2,
  limit: 100,
});

// AFTER (v9 cursor pagination — preferred for large datasets)
const keys = await lok.keys().list({
  project_id: projectId,
  limit: 500,
  pagination: 'cursor',
  cursor: previousCursor,
});
// Access next cursor: keys.nextCursor
// Check for more: keys.hasNextCursor()

// BEFORE (v8)
const { ApiError } = require('@lokalise/node-api');
try {
  await lok.projects().get(projectId);
} catch (e) {
  if (e instanceof ApiError) {
    console.error(e.message, e.code);
  }
}

// AFTER (v9 — ApiError import path unchanged, but must use import)
import { ApiError } from '@lokalise/node-api';
try {
  await lok.projects().get(projectId);
} catch (e) {
  if (e instanceof ApiError) {
    console.error(e.message, e.code);
  }
}

set -euo pipefail
# Create a safety branch
git checkout -b upgrade/lokalise-sdk-v9

# Install the target version
npm install @lokalise/node-api@latest

# Run TypeScript compilation check
npx tsc --noEmit 2>&1 | head -40 || true

# Run tests
npm test

// Quick smoke test after upgrade
import { LokaliseApi } from '@lokalise/node-api';

const lok = new LokaliseApi({ apiKey: process.env.LOKALISE_API_TOKEN! });

// Test basic operations still work
const projects = await lok.projects().list({ limit: 1 });
console.log('API connection OK:', projects.items[0]?.name ?? 'no projects');

const keys = await lok.keys().list({
  project_id: projects.items[0].project_id,
  limit: 5,
  pagination: 'cursor',
});
console.log('Cursor pagination OK:', keys.items.length, 'keys fetched');

Issue	Cause	Solution
`ERR_REQUIRE_ESM`	Using `require()` with v9 SDK	Convert to `import` syntax and set `"type": "module"` in package.json
`SyntaxError: Cannot use import`	Node.js file not recognized as ESM	Rename `.js` to `.mjs` or add `"type": "module"`
`TypeError: lok.keys is not a function`	API changed between major versions	Check SDK changelog for renamed methods
`ERR_UNKNOWN_FILE_EXTENSION .ts`	TypeScript not configured for ESM	Use `tsx` runner or configure `ts-node` with `"esm": true`
Tests fail after upgrade	Breaking API changes	Check test against the version-specific migration notes above

set -euo pipefail
# If the upgrade causes issues, revert immediately
git stash  # Save any work in progress
npm install @lokalise/node-api@8  # Last CJS version
git checkout HEAD -- tsconfig.json package.json
npm test
echo "Rolled back to v8. Investigate failures before retrying."

set -euo pipefail
# macOS
brew upgrade lokalise2

# Linux — download latest release binary
LATEST_CLI=$(curl -s https://api.github.com/repos/lokalise/lokalise-cli-2-go/releases/latest | grep -oP '"tag_name": "\K[^"]+')
curl -sL "https://github.com/lokalise/lokalise-cli-2-go/releases/download/${LATEST_CLI}/lokalise2_linux_x86_64.tar.gz" | tar xz
sudo mv lokalise2 /usr/local/bin/

# Verify
lokalise2 --version

set -euo pipefail
# Patterns that indicate outdated SDK usage
echo "=== Deprecated Patterns ==="
grep -rn "\.page\s*:" --include="*.ts" --include="*.js" . && echo "^ Offset pagination — migrate to cursor" || echo "No offset pagination found"
grep -rn "require.*lokalise" --include="*.ts" --include="*.js" . && echo "^ CommonJS require — migrate to ESM import" || echo "No CJS requires found"
grep -rn "new LokaliseApi.*token:" --include="*.ts" --include="*.js" . && echo "^ Old constructor — use apiKey instead of token" || echo "No old constructor pattern found"