#monorepo

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TypeScript 7 migration notes from a monorepo

The Go port of the TypeScript compiler went GA on 8 July 2026, with an 8x to 12x speedup on full builds. I moved a six package pnpm monorepo across in an afternoon. This is what actually changed, what broke, and the one thing I'd check before you run the upgrade.

typescripttoolingmonorepo+1 more

Jul 21, 20269 min12 min

~/tips/today — 2026-10-19

~cat tips/today

Never build an index on a live table without CONCURRENTLY

postgresqlmigrations

A plain CREATE INDEX takes a lock that blocks every write to the table for the whole build. On a big table that means minutes of outage that look like a hung app.

CREATE INDEX CONCURRENTLY orders_customer_idx ON orders (customer_id);

It's slower and can't run inside a transaction, so you'll have to tell your migration tool. If it fails halfway, it leaves an invalid index behind, so check pg_index.indisvalid and drop it before you retry.

↵ open y yesterday l ls /tips

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