# Change Log All notable changes to this project will be documented in this file. See [Conventional Commits](https://conventionalcommits.org) for commit guidelines. ## [4.0.5](https://github.com/mikro-orm/mikro-orm/compare/v4.0.4...v4.0.5) (2020-09-21) ### Bug Fixes * **core:** fix merging results from QB to existing entity ([218098a](https://github.com/mikro-orm/mikro-orm/commit/218098ababb47dc3ad3e441d631cab5615251a0e)) * **schema:** defer creating of composite indexes + implement diffing ([f57b457](https://github.com/mikro-orm/mikro-orm/commit/f57b4571feb2aea7c955c5f7eb7470530133271e)), closes [#850](https://github.com/mikro-orm/mikro-orm/issues/850) ### Features * **mapping:** make `@Unique` and `@Index` (optionally) typesafe ([afe6801](https://github.com/mikro-orm/mikro-orm/commit/afe68015765478d40fbab6701c11661d74e2cf77)), closes [#850](https://github.com/mikro-orm/mikro-orm/issues/850) ## [4.0.4](https://github.com/mikro-orm/mikro-orm/compare/v4.0.3...v4.0.4) (2020-09-19) ### Bug Fixes * **core:** allow filter condition callbacks without arguments ([5b3401f](https://github.com/mikro-orm/mikro-orm/commit/5b3401f28cbfcc4e78707fb8110be418a695932a)), closes [#847](https://github.com/mikro-orm/mikro-orm/issues/847) * **core:** allow filter condition callbacks without arguments ([da8fbfc](https://github.com/mikro-orm/mikro-orm/commit/da8fbfc5aa7c2a4a3b58325b4874125d2f67d2c1)), closes [#847](https://github.com/mikro-orm/mikro-orm/issues/847) * **core:** allow querying `ArrayType` with a value ([e505358](https://github.com/mikro-orm/mikro-orm/commit/e50535816f318ff0c0c5edf68270920ff2cef520)), closes [#844](https://github.com/mikro-orm/mikro-orm/issues/844) * **core:** improve metadata validation of STI relations ([0b97af8](https://github.com/mikro-orm/mikro-orm/commit/0b97af8404fd557836f8afae9cce255aca083873)), closes [#845](https://github.com/mikro-orm/mikro-orm/issues/845) * **core:** update filter typing to allow async condition ([#848](https://github.com/mikro-orm/mikro-orm/issues/848)) ([2188f62](https://github.com/mikro-orm/mikro-orm/commit/2188f621163bebe9bbb74d1b693871fe22017d38)) * **deps:** update dependency escaya to ^0.0.44 ([#839](https://github.com/mikro-orm/mikro-orm/issues/839)) ([fedb41c](https://github.com/mikro-orm/mikro-orm/commit/fedb41cc53eeafb3e3e1540c46acc5f8f58f43b2)) * **deps:** update dependency escaya to ^0.0.45 ([#842](https://github.com/mikro-orm/mikro-orm/issues/842)) ([d9f9f05](https://github.com/mikro-orm/mikro-orm/commit/d9f9f0572a1bb1d5a5567a46b835fa1877cb3806)) * **query-builder:** fix mapping of nested 1:1 properties ([9799e70](https://github.com/mikro-orm/mikro-orm/commit/9799e70bd7235695f4f1e55b25fe61bbc158eb38)) ### Features * **core:** allow setting loading strategy globally ([e4378ee](https://github.com/mikro-orm/mikro-orm/commit/e4378ee6dca5607a82e2bff3450e18f0a6668354)), closes [#834](https://github.com/mikro-orm/mikro-orm/issues/834) ### Performance Improvements * move reference to metadata to entity prototype + more improvements ([#843](https://github.com/mikro-orm/mikro-orm/issues/843)) ([f71e4c2](https://github.com/mikro-orm/mikro-orm/commit/f71e4c2b8dd0bbfb0658dc8a366444ec1a49c187)), closes [#732](https://github.com/mikro-orm/mikro-orm/issues/732) ### Reverts * Revert "refactor: return `target` from decorator definition" ([e021617](https://github.com/mikro-orm/mikro-orm/commit/e02161774a904748cfa13e683fb2ce93d66403ca)) ## [4.0.3](https://github.com/mikro-orm/mikro-orm/compare/v4.0.2...v4.0.3) (2020-09-15) ### Bug Fixes * **core:** make a copy of custom type values to allow array diffing ([6ae72ae](https://github.com/mikro-orm/mikro-orm/commit/6ae72ae03054df16717a52041d5574a6f4a0d66d)) ### Features * **core:** allow using `AsyncLocalStorage` for request context ([47cd9a5](https://github.com/mikro-orm/mikro-orm/commit/47cd9a5798a70d57cfb9ac3ec7f2254a77aafdfb)), closes [#575](https://github.com/mikro-orm/mikro-orm/issues/575) ### Performance Improvements * **core:** create the helper instance early ([f4f90eb](https://github.com/mikro-orm/mikro-orm/commit/f4f90ebe7d540164c2959c554a5245dda712b612)) * **core:** do not generate internal entity uuid ([9f46aa4](https://github.com/mikro-orm/mikro-orm/commit/9f46aa4a79c0ead726af3b2001f7edb257ecd676)) * **core:** do not use `em.merge()` internally ([6a1a6d6](https://github.com/mikro-orm/mikro-orm/commit/6a1a6d68b65a20b8f1a78bf644844427f3b2dd1a)) * **core:** remove WrappedEntity.__internal map ([2228fcb](https://github.com/mikro-orm/mikro-orm/commit/2228fcbd2eb7e19b2067b78f7b8fd2d2a5ce0916)) * **core:** skip processing of hooks when there are no hooks ([425784b](https://github.com/mikro-orm/mikro-orm/commit/425784bda59bee84a3663e133f9c451e45587226)) * **core:** store entity identifier on entity helper ([403acca](https://github.com/mikro-orm/mikro-orm/commit/403acca1973279e7509f2707cfb0240b8c6f92ae)) * **core:** store original entity data on entity helper ([6a91b01](https://github.com/mikro-orm/mikro-orm/commit/6a91b0101553de397667c048f1f8deb0ff94370d)) ## [4.0.2](https://github.com/mikro-orm/mikro-orm/compare/v4.0.1...v4.0.2) (2020-09-11) ### Bug Fixes * **core:** simplify `Collection` type args ([1fb6cec](https://github.com/mikro-orm/mikro-orm/commit/1fb6cecb29c95de9307c89518a99bbb35620b867)) ## [4.0.1](https://github.com/mikro-orm/mikro-orm/compare/v4.0.0...v4.0.1) (2020-09-10) ### Bug Fixes * **core:** hydrate user defined discriminator columns ([#831](https://github.com/mikro-orm/mikro-orm/issues/831)) ([8671440](https://github.com/mikro-orm/mikro-orm/commit/867144005f18ab7780b60803c40ed448e0b31a8c)), closes [#827](https://github.com/mikro-orm/mikro-orm/issues/827) * **core:** refactor internals to reduce number of cycles ([#830](https://github.com/mikro-orm/mikro-orm/issues/830)) ([3994767](https://github.com/mikro-orm/mikro-orm/commit/3994767d93ef119d229bedffa77eb2ea3af5c775))