# TypeScript 6 → 7 migration benchmarks

Generated 2026-07-16T08:25:04.413Z from `scripts/typescript-migration/results/`.

| Package | typecheck Δ | build Δ |
| --- | --- | --- |
| `@n8n/agents` | -71.1% | -67.0% |
| `@n8n/ai-node-sdk` | -53.1% | -54.3% |
| `@n8n/ai-utilities` | -66.9% | -63.2% |
| `@n8n/ai-workflow-builder` | -69.3% | -33.1% |
| `@n8n/api-types` | -64.6% | -66.6% |
| `@n8n/backend-common` | -57.0% | -54.5% |
| `@n8n/backend-network` | -57.0% | -54.9% |
| `@n8n/backend-test-utils` | -51.4% | -53.1% |
| `@n8n/chat-hub` | -50.4% | -50.5% |
| `@n8n/cli` | -45.7% | -45.7% |
| `@n8n/client-oauth2` | -45.6% | -39.7% |
| `@n8n/codemirror-lang` | -36.3% | -31.4% |
| `@n8n/codemirror-lang-html` | — | -17.0% |
| `@n8n/codemirror-lang-sql` | -42.7% | -39.2% |
| `@n8n/computer-use` | -52.8% | -53.4% |
| `@n8n/config` | -48.2% | -37.9% |
| `@n8n/constants` | -35.8% | -36.6% |
| `@n8n/crdt` | -40.8% | -41.0% |
| `@n8n/engine` | -37.2% | -40.8% |
| `@n8n/errors` | -39.0% | -40.6% |
| `@n8n/eslint-config` | -71.1% | -61.5% |
| `@n8n/eslint-plugin-community-nodes` | -50.6% | -47.1% |
| `@n8n/expression-runtime` | -57.1% | -42.4% |
| `@n8n/imap` | -48.6% | -36.7% |
| `@n8n/instance-ai` | -70.0% | -40.3% |
| `@n8n/json-schema-to-zod` | -43.9% | -34.7% |
| `@n8n/local-gateway` | -46.1% | -42.1% |
| `@n8n/mcp-browser` | -57.6% | -55.6% |
| `@n8n/n8n-benchmark` | -49.2% | -39.0% |
| `@n8n/n8n-nodes-langchain` | -74.2% | -21.6% |
| `@n8n/node-cli` | -55.3% | -48.3% |
| `@n8n/typeorm` | -37.9% | -68.7% |
| `n8n` | -75.5% | -71.3% |

```
=== @n8n/agents — median times (Δ vs "before") ===

typecheck:
  before               3.04s
  after                880ms  -2163ms (-71.1%)

build:
  before               2.30s
  after                757ms  -1539ms (-67.0%)
```

```
=== @n8n/ai-node-sdk — median times (Δ vs "before") ===

typecheck:
  before               1.12s
  after                526ms  -595ms (-53.1%)

build:
  before               1.21s
  after                552ms  -657ms (-54.3%)
```

```
=== @n8n/ai-utilities — median times (Δ vs "before") ===

typecheck:
  before               2.35s
  after                779ms  -1571ms (-66.9%)

build:
  before               4.55s
  after                1.67s  -2878ms (-63.2%)
```

```
=== @n8n/ai-workflow-builder — median times (Δ vs "before") ===

typecheck:
  before               3.87s
  after                1.19s  -2683ms (-69.3%)

build:
  before               3.25s
  after                2.17s  -1078ms (-33.1%)
```

```
=== @n8n/api-types — median times (Δ vs "before") ===

typecheck:
  before               2.55s
  after                903ms  -1651ms (-64.6%)

build:
  before               2.64s
  after                882ms  -1757ms (-66.6%)
```

```
=== @n8n/backend-common — median times (Δ vs "before") ===

typecheck:
  before               1.34s
  after                576ms  -765ms (-57.0%)

build:
  before               1.19s
  after                541ms  -649ms (-54.5%)
```

```
=== @n8n/backend-network — median times (Δ vs "before") ===

typecheck:
  before               1.52s
  after                656ms  -868ms (-57.0%)

build:
  before               1.28s
  after                576ms  -701ms (-54.9%)
```

```
=== @n8n/backend-test-utils — median times (Δ vs "before") ===

typecheck:
  before               1.54s
  after                748ms  -792ms (-51.4%)

build:
  before               1.60s
  after                751ms  -850ms (-53.1%)
```

```
=== @n8n/chat-hub — median times (Δ vs "before") ===

typecheck:
  before               1.14s
  after                564ms  -574ms (-50.4%)

build:
  before               1.07s
  after                529ms  -540ms (-50.5%)
```

```
=== @n8n/cli — median times (Δ vs "before") ===

typecheck:
  before               943ms
  after                512ms  -431ms (-45.7%)

build:
  before               982ms
  after                533ms  -449ms (-45.7%)
```

```
=== @n8n/client-oauth2 — median times (Δ vs "before") ===

typecheck:
  before               872ms
  after                474ms  -398ms (-45.6%)

build:
  before               763ms
  after                460ms  -303ms (-39.7%)
```

```
=== @n8n/codemirror-lang — median times (Δ vs "before") ===

typecheck:
  before               699ms
  after                445ms  -254ms (-36.3%)

build:
  before               650ms
  after                446ms  -204ms (-31.4%)
```

```
=== @n8n/codemirror-lang-html — median times (Δ vs "before") ===

build:
  before               1.09s
  after                905ms  -186ms (-17.0%)
```

```
=== @n8n/codemirror-lang-sql — median times (Δ vs "before") ===

typecheck:
  before               785ms
  after                450ms  -335ms (-42.7%)

build:
  before               720ms
  after                438ms  -282ms (-39.2%)
```

```
=== @n8n/computer-use — median times (Δ vs "before") ===

typecheck:
  before               1.27s
  after                599ms  -670ms (-52.8%)

build:
  before               1.15s
  after                535ms  -614ms (-53.4%)
```

```
=== @n8n/config — median times (Δ vs "before") ===

typecheck:
  before               1.02s
  after                529ms  -493ms (-48.2%)

build:
  before               952ms
  after                591ms  -361ms (-37.9%)
```

```
=== @n8n/constants — median times (Δ vs "before") ===

typecheck:
  before               670ms
  after                430ms  -240ms (-35.8%)

build:
  before               691ms
  after                438ms  -253ms (-36.6%)
```

```
=== @n8n/crdt — median times (Δ vs "before") ===

typecheck:
  before               921ms
  after                545ms  -376ms (-40.8%)

build:
  before               808ms
  after                477ms  -331ms (-41.0%)
```

```
=== @n8n/engine — median times (Δ vs "before") ===

typecheck:
  before               749ms
  after                470ms  -279ms (-37.2%)

build:
  before               785ms
  after                465ms  -320ms (-40.8%)
```

```
=== @n8n/errors — median times (Δ vs "before") ===

typecheck:
  before               807ms
  after                492ms  -315ms (-39.0%)

build:
  before               834ms
  after                495ms  -339ms (-40.6%)
```

```
=== @n8n/eslint-config — median times (Δ vs "before") ===

typecheck:
  before               1.73s
  after                501ms  -1231ms (-71.1%)

build:
  before               1.32s
  after                508ms  -810ms (-61.5%)
```

```
=== @n8n/eslint-plugin-community-nodes — median times (Δ vs "before") ===

typecheck:
  before               1.17s
  after                579ms  -594ms (-50.6%)

build:
  before               1.13s
  after                597ms  -531ms (-47.1%)
```

```
=== @n8n/expression-runtime — median times (Δ vs "before") ===

typecheck:
  before               1.44s
  after                619ms  -824ms (-57.1%)

build:
  before               2.89s
  after                1.66s  -1225ms (-42.4%)
```

```
=== @n8n/imap — median times (Δ vs "before") ===

typecheck:
  before               1.04s
  after                537ms  -507ms (-48.6%)

build:
  before               780ms
  after                494ms  -286ms (-36.7%)
```

```
=== @n8n/instance-ai — median times (Δ vs "before") ===

typecheck:
  before               3.36s
  after                1.01s  -2351ms (-70.0%)

build:
  before               3.21s
  after                1.91s  -1293ms (-40.3%)
```

```
=== @n8n/json-schema-to-zod — median times (Δ vs "before") ===

typecheck:
  before               955ms
  after                536ms  -419ms (-43.9%)

build:
  before               2.33s
  after                1.52s  -807ms (-34.7%)
```

```
=== @n8n/local-gateway — median times (Δ vs "before") ===

typecheck:
  before               952ms
  after                513ms  -439ms (-46.1%)

build:
  before               2.00s
  after                1.16s  -844ms (-42.1%)
```

```
=== @n8n/mcp-browser — median times (Δ vs "before") ===

typecheck:
  before               1.44s
  after                609ms  -827ms (-57.6%)

build:
  before               1.35s
  after                597ms  -749ms (-55.6%)
```

```
=== @n8n/n8n-benchmark — median times (Δ vs "before") ===

typecheck:
  before               942ms
  after                479ms  -463ms (-49.2%)

build:
  before               948ms
  after                578ms  -370ms (-39.0%)
```

```
=== @n8n/n8n-nodes-langchain — median times (Δ vs "before") ===

typecheck:
  before               8.30s
  after                2.14s  -6163ms (-74.2%)

build:
  before              25.79s
  after               20.23s  -5560ms (-21.6%)
```

```
=== @n8n/node-cli — median times (Δ vs "before") ===

typecheck:
  before               1.42s
  after                634ms  -785ms (-55.3%)

build:
  before               1.76s
  after                911ms  -851ms (-48.3%)
```

```
=== @n8n/typeorm — median times (Δ vs "before") ===

typecheck:
  before               1.45s
  after                898ms  -547ms (-37.9%)

build:
  before               2.84s
  after                890ms  -1949ms (-68.7%)
```

```
=== n8n — median times (Δ vs "before") ===

typecheck:
  before              20.87s
  after                5.12s  -15750ms (-75.5%)

build:
  before              12.86s
  after                3.69s  -9172ms (-71.3%)
```