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add import prop @ FileMigrationProvider. #994

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@igalklebanov igalklebanov commented May 18, 2024

Hey 👋

This PR allows passing an optional custom import function @ FileMigrationProvider.
e.g. this would allow consumers to pass a function that uses tsImport by tsx to import TS files without the need to precompile them when using Node.js or a similar JavaScript runtime that doesn't have built-in TS file support.

Also adds onDiscarded optional prop, so external tooling can warn users about files that were ignored by the migration provider.

Also extracts file extension check to a protected method - can be overridden to only support TS files by an extending class.
Also adds cjs & cts support.

These changes were inspired by https://github.com/kysely-org/kysely-ctl/blob/main/src/kysely/ts-file-migration-provider.mts , a custom provider implementation in kysely-ctl that only works with TS migration files, on all runtimes.

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@igalklebanov igalklebanov changed the title add import prop @ file migration provider. add import prop @ FileMigrationProvider. May 18, 2024
@@ -2,7 +2,8 @@
"extends": "../../tsconfig-base.json",
"include": ["src/**/*"],
"compilerOptions": {
"module": "CommonJS",
"outDir": "dist"
"module": "NodeNext",
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necessary to allow importing tsx/*.

Comment on lines +2 to +7
import chaiAsPromised from 'chai-as-promised'
import chaiSubset from 'chai-subset'
import Cursor from 'pg-cursor'
import { Pool, PoolConfig } from 'pg'
import { createPool } from 'mysql2'
import * as Database from 'better-sqlite3'
import Database from 'better-sqlite3'
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necessary after tsconfig changes.

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