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deepmerge-ts

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Deeply merge 2 or more objects respecting type information.

github.com/RebeccaStevens/deepmerge-ts

RebeccaStevens/deepmerge-ts

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# Changelog All notable changes to this project will be documented in this file. Dates are displayed in UTC. ## [7.1.5](https://github.com/RebeccaStevens/deepmerge-ts/compare/v7.1.4...v7.1.5) (2025-02-23) ### Bug Fixes * improve type merging of nested optional properties ([#530](https://github.com/RebeccaStevens/deepmerge-ts/issues/530)) ([349fd14](https://github.com/RebeccaStevens/deepmerge-ts/commit/349fd14d20405f2a56ff9ce788959db38fc970f4)) ## [7.1.4](https://github.com/RebeccaStevens/deepmerge-ts/compare/v7.1.3...v7.1.4) (2025-01-23) ### Bug Fixes * apply filtering to types when selecting a leaf node ([#526](https://github.com/RebeccaStevens/deepmerge-ts/issues/526)) ([6d85163](https://github.com/RebeccaStevens/deepmerge-ts/commit/6d85163aecce3981b3a2f5378cb17f471fa7566b)), closes [#524](https://github.com/RebeccaStevens/deepmerge-ts/issues/524) ## [7.1.3](https://github.com/RebeccaStevens/deepmerge-ts/compare/v7.1.2...v7.1.3) (2024-10-08) ## [7.1.2](https://github.com/RebeccaStevens/deepmerge-ts/compare/v7.1.1...v7.1.2) (2024-10-08) ### Performance Improvements * use more performant data structures ([#519](https://github.com/RebeccaStevens/deepmerge-ts/issues/519)) ([a48f8c4](https://github.com/RebeccaStevens/deepmerge-ts/commit/a48f8c4ccc32ec8937cc7177991a072a93e329b2)) ## [7.1.1](https://github.com/RebeccaStevens/deepmerge-ts/compare/v7.1.0...v7.1.1) (2024-10-04) ### Performance Improvements * add explicit return type to speed up types ([8e1ff6d](https://github.com/RebeccaStevens/deepmerge-ts/commit/8e1ff6d04abe4ae0d541bba817054578924ca3db)) # [7.1.0](https://github.com/RebeccaStevens/deepmerge-ts/compare/v7.0.3...v7.1.0) (2024-07-20) ### Features * **benchmark:** add `defu` to compare with ([#486](https://github.com/RebeccaStevens/deepmerge-ts/issues/486)) ([93599b4](https://github.com/RebeccaStevens/deepmerge-ts/commit/93599b4bb6cd341cbaef156d619530a16e34550f)) ## [7.0.3](https://github.com/RebeccaStevens/deepmerge-ts/compare/v7.0.2...v7.0.3) (2024-06-06) ### Bug Fixes * merge functions' types ([ca94270](https://github.com/RebeccaStevens/deepmerge-ts/commit/ca94270da73d0a071043ef0e8936b17c444e40ab)) ## [7.0.2](https://github.com/RebeccaStevens/deepmerge-ts/compare/v7.0.1...v7.0.2) (2024-06-03) ### Bug Fixes * support older module resolutions ([063675e](https://github.com/RebeccaStevens/deepmerge-ts/commit/063675eccc19f0565527a2ec584d76801ccfe249)), closes [#480](https://github.com/RebeccaStevens/deepmerge-ts/issues/480) ## [7.0.1](https://github.com/RebeccaStevens/deepmerge-ts/compare/v7.0.0...v7.0.1) (2024-05-21) ### Bug Fixes * handling of partial types ([1832bd0](https://github.com/RebeccaStevens/deepmerge-ts/commit/1832bd071b925c49a2d5d1c944703916ee4348d4)), closes [#476](https://github.com/RebeccaStevens/deepmerge-ts/issues/476) # [7.0.0](https://github.com/RebeccaStevens/deepmerge-ts/compare/v6.0.3...v7.0.0) (2024-05-20) ### Code Refactoring * rename DeepMergeFunctionUtils to DeepMergeUtils ([e821255](https://github.com/RebeccaStevens/deepmerge-ts/commit/e821255380dd9307041e6749c43d363e4e2ae633)) * rename DeepMergeMerge* to DeepMerge* ([fd4d2d4](https://github.com/RebeccaStevens/deepmerge-ts/commit/fd4d2d462eec14841adc45d741148cc7a9449a1f)) ### Features * allow filtering out values before merging them ([0784f63](https://github.com/RebeccaStevens/deepmerge-ts/commit/0784f63befc4ab4d66b6f3ae4b2076fba203fb48)), closes [#460](https://github.com/RebeccaStevens/deepmerge-ts/issues/460) ### BREAKING CHANGES * rename DeepMergeFunctionUtils to DeepMergeUtils * rename DeepMergeMerge* to DeepMerge* * allow filtering out values before merging them ## [6.0.3](https://github.com/RebeccaStevens/deepmerge-ts/compare/v6.0.2...v6.0.3) (2024-05-20) ### Bug Fixes * deepmergeInto unsafe key value assignment ([6b04863](https://github.com/RebeccaStevens/deepmerge-ts/commit/6b048630ca13052927a85a802a9fe9977519db4c)) ## [6.0.2](https://github.com/RebeccaStevens/deepmerge-ts/compare/v6.0.1...v6.0.2) (2024-05-20) ### Bug Fixes * return type when using empty records ([6b4ff3f](https://github.com/RebeccaStevens/deepmerge-ts/commit/6b4ff3f42951cd9b548d2b4adb184fed4e35be2d)), closes [#465](https://github.com/RebeccaStevens/deepmerge-ts/issues/465) ## [6.0.1](https://github.com/RebeccaStevens/deepmerge-ts/compare/v6.0.0...v6.0.1) (2024-05-20) ### Bug Fixes * type when merging index signatures ([5e8b9b6](https://github.com/RebeccaStevens/deepmerge-ts/commit/5e8b9b668a13ef51da10a5321d4698d01d872013)), closes [#459](https://github.com/RebeccaStevens/deepmerge-ts/issues/459) # [6.0.0](https://github.com/RebeccaStevens/deepmerge-ts/compare/v5.1.0...v6.0.0) (2024-05-19) ### Bug Fixes * type when merging optional properties of a record ([fa9ace2](https://github.com/RebeccaStevens/deepmerge-ts/commit/fa9ace2a2b38030d12fa85634966d409b8bb123f)) ### Build System * remove typing support for typescript<4.7 ([f2f5956](https://github.com/RebeccaStevens/deepmerge-ts/commit/f2f5956d653a672073fc3c0174f9d8d6ca9d4371)) ### Features * allow restricting what types can be passed in as parameters ([69e9ba3](https://github.com/RebeccaStevens/deepmerge-ts/commit/69e9ba3519319eb02763887f457549340e9a9c76)), closes [#305](https://github.com/RebeccaStevens/deepmerge-ts/issues/305) * remove deprecated type DeepMergeLeafHKT ([1982e56](https://github.com/RebeccaStevens/deepmerge-ts/commit/1982e56016cbbbfd07f78e8512b56e8294ff83c0)) * undefined will no longer replace defined values by default ([9c86605](https://github.com/RebeccaStevens/deepmerge-ts/commit/9c866054cbade77118b5cd62b1e8e68033fe2879)) ### Performance Improvements * remove BlacklistedRecordProps ([19d4944](https://github.com/RebeccaStevens/deepmerge-ts/commit/19d4944fa228d66d5af93f419526ffaf8b5a376b)) ### BREAKING CHANGES * remove deprecated type DeepMergeLeafHKT * undefined will no longer replace defined values by default * The order of the generics of `deepmergeCustom` and `deepmergeIntoCustom` have changed. If you are passing generics to these functions you need to update them. * remove typing support for typescript<4.7 # [5.1.0](https://github.com/RebeccaStevens/deepmerge-ts/compare/v5.0.0...v5.1.0) (2023-04-04) ### Features * expose some of the internal utils ([a11a03d](https://github.com/RebeccaStevens/deepmerge-ts/commit/a11a03d0fcd5e1caad371c5eb5a19052b8980691)) # [5.0.0](https://github.com/RebeccaStevens/deepmerge-ts/compare/v4.3.0...v5.0.0) (2023-03-18) ### Bug Fixes * add missing dev dep ([df4add2](https://github.com/RebeccaStevens/deepmerge-ts/commit/df4add2a0aba101b0b00527cb105d194e17bdfaf)) * remove unneeded eslint disable ([be28290](https://github.com/RebeccaStevens/deepmerge-ts/commit/be28290a3efb533ab339ef88e297b3e057708603)) * use default MM generics ([944b428](https://github.com/RebeccaStevens/deepmerge-ts/commit/944b428e3779904c32d071a2761753872ab717f4)), closes [#304](https://github.com/RebeccaStevens/deepmerge-ts/issues/304) ### chore * drop support for node 12 and 14 ([77016f7](https://github.com/RebeccaStevens/deepmerge-ts/commit/77016f70664b6f5857b9f278912a31aa219be80d)) ### BREAKING CHANGES * drop support for node 12 and 14 # [5.0.0-next.4](https://github.com/RebeccaStevens/deepmerge-ts/compare/v5.0.0-next.3...v5.0.0-next.4) (2023-03-18) ### Bug Fixes * remove unneeded eslint disable ([be28290](https://github.com/RebeccaStevens/deepmerge-ts/commit/be28290a3efb533ab339ef88e297b3e057708603)) * use default MM generics ([944b428](https://github.com/RebeccaStevens/deepmerge-ts/commit/944b428e3779904c32d071a2761753872ab717f4)), closes [#304](https://github.com/RebeccaStevens/deepmerge-ts/issues/304) # [5.0.0-next.3](https://github.com/RebeccaStevens/deepmerge-ts/compare/v5.0.0-next.2...v5.0.0-next.3) (2023-03-18) ### Bug Fixes * add missing dev dep ([df4add2](https://github.com/RebeccaStevens/deepmerge-ts/commit/df4add2a0aba101b0b00527cb105d194e17bdfaf)) # [5.0.0-next.2](https://github.com/RebeccaStevens/deepmerge-ts/compare/v5.0.0-next.1...v5.0.0-next.2) (2023-02-06) ### Features * create deepmergeInto function ([9c350a0](https://github.com/RebeccaStevens/deepmerge-ts/commit/9c350a051c16534907da459ff466a353b90d5505)), closes [#51](https://github.com/RebeccaStevens/deepmerge-ts/issues/51) # [5.0.0-next.1](https://github.com/RebeccaStevens/deepmerge-ts/compare/v4.2.2...v5.0.0-next.1) (2023-02-02) ### chore * drop support for node 12 and 14 ([77016f7](https://github.com/RebeccaStevens/deepmerge-ts/commit/77016f70664b6f5857b9f278912a31aa219be80d)) ### BREAKING CHANGES * drop support for node 12 and 14 # [4.3.0](https://github.com/RebeccaStevens/deepmerge-ts/compare/v4.2.2...v4.3.0) (2023-02-06) ### Features * create deepmergeInto function ([9c350a0](https://github.com/RebeccaStevens/deepmerge-ts/commit/9c350a051c16534907da459ff466a353b90d5505)), closes [#51](https://github.com/RebeccaStevens/deepmerge-ts/issues/51) ## [4.2.2](https://github.com/RebeccaStevens/deepmerge-ts/compare/v4.2.1...v4.2.2) (2022-09-19) ## [4.2.1](https://github.com/RebeccaStevens/deepmerge-ts/compare/v4.2.0...v4.2.1) (2022-06-15) ### Bug Fixes * broken type info path ([#146](https://github.com/RebeccaStevens/deepmerge-ts/issues/146)) ([b875711](https://github.com/RebeccaStevens/deepmerge-ts/commit/b8757111ccff257e7403b5d91235b965b4542afd)) # [4.2.0](https://github.com/RebeccaStevens/deepmerge-ts/compare/v4.1.0...v4.2.0) (2022-06-15) ### Features * export types for module resolution node 16 ([20241c5](https://github.com/RebeccaStevens/deepmerge-ts/commit/20241c5bdffcc77025ea778257193f1afbe40768)) ### Performance Improvements * **ts:** add variance annotations ([cecc9db](https://github.com/RebeccaStevens/deepmerge-ts/commit/cecc9dbcfc68335f04372e2fa339a347f71c90bc)) * **ts:** use extends constraints on infer ([f053e76](https://github.com/RebeccaStevens/deepmerge-ts/commit/f053e76221fb790f1dead0b2b5c9a9f4432cb1d8)) # [4.1.0](https://github.com/RebeccaStevens/deepmerge-ts/compare/v4.0.4...v4.1.0) (2022-06-13) ### Features * treat module imports as records ([20c0dfb](https://github.com/RebeccaStevens/deepmerge-ts/commit/20c0dfb82e4273b10e5a02ba0e74aada42b9bb7a)), closes [#133](https://github.com/RebeccaStevens/deepmerge-ts/issues/133) ## [4.0.4](https://github.com/RebeccaStevens/deepmerge-ts/compare/v4.0.3...v4.0.4) (2022-06-13) ### Bug Fixes * drop keys that have no enumerable properties ([3363570](https://github.com/RebeccaStevens/deepmerge-ts/commit/3363570fcc53488d22a2d4b778b558173c7ee5c9)) ## [4.0.3](https://github.com/RebeccaStevens/deepmerge-ts/compare/v4.0.2...v4.0.3) (2022-04-06) ### Bug Fixes * use explict return types for function that return a HKT ([eb4183e](https://github.com/RebeccaStevens/deepmerge-ts/commit/eb4183e5441ea8b36bbb8f24ffa38ba850eb389c)), closes [#94](https://github.com/RebeccaStevens/deepmerge-ts/issues/94) ## [4.0.2](https://github.com/RebeccaStevens/deepmerge-ts/compare/v4.0.1...v4.0.2) (2022-03-31) ### Bug Fixes * protect against prototype pollution ([d637db7](https://github.com/RebeccaStevens/deepmerge-ts/commit/d637db7e4fb2bfb113cb4bc1c85a125936d7081b)) ## [4.0.1](https://github.com/RebeccaStevens/deepmerge-ts/compare/v4.0.0...v4.0.1) (2022-03-14) ### Bug Fixes * **deno:** fix broken import in deno dist files ([#85](https://github.com/RebeccaStevens/deepmerge-ts/issues/85)) ([86faf2a](https://github.com/RebeccaStevens/deepmerge-ts/commit/86faf2a047488be2fbb1ff6a1edd005b5d4670cb)) # [4.0.0](https://github.com/RebeccaStevens/deepmerge-ts/compare/v3.0.1...v4.0.0) (2022-02-26) ### Bug Fixes * improve meta data typings ([#61](https://github.com/RebeccaStevens/deepmerge-ts/issues/61)) ([9a881d3](https://github.com/RebeccaStevens/deepmerge-ts/commit/9a881d3e55762da03b0d0f465d7e958d81fd0958)) ### Features * allow for default merging via a special return value ([658d1fd](https://github.com/RebeccaStevens/deepmerge-ts/commit/658d1fd454fe095e6c7f2be22ccf4823fe0ea6ef)) * allow for implicit default merging ([1d5e617](https://github.com/RebeccaStevens/deepmerge-ts/commit/1d5e617bc4980f64a75fa9da1397979b2310fc06)) * allow for skipping properties completely via a special return value ([#64](https://github.com/RebeccaStevens/deepmerge-ts/issues/64)) ([676f2f6](https://github.com/RebeccaStevens/deepmerge-ts/commit/676f2f6593d6baf0e1b31f29c83bac7c392e7ce2)) ### BREAKING CHANGES * MetaMetaData now must extends DeepMergeBuiltInMetaData ## [3.0.1](https://github.com/RebeccaStevens/deepmerge-ts/compare/v3.0.0...v3.0.1) (2022-02-22) ### Bug Fixes * allows readonly records in DeepMergeRecordsDefaultHKTInternalPropValueHelper ([#60](https://github.com/RebeccaStevens/deepmerge-ts/issues/60)) ([fc85dfa](https://github.com/RebeccaStevens/deepmerge-ts/commit/fc85dfa0cc579de127c8458e808f81cbca84d090)) # [3.0.0](https://github.com/RebeccaStevens/deepmerge-ts/compare/v2.0.1...v3.0.0) (2022-02-19) ### Code Refactoring * unrequire unused types and values ([c78e373](https://github.com/RebeccaStevens/deepmerge-ts/commit/c78e3736fe725008b745a302233afacb2155db94)) ### Features * lone values will now be passed to mergeOthers rather than just returned ([#57](https://github.com/RebeccaStevens/deepmerge-ts/issues/57)) ([9c24584](https://github.com/RebeccaStevens/deepmerge-ts/commit/9c245846f8afbd8bc0fbe2a28626e6461f41ea53)) * provide customizable meta data to custom merge functions ([3d96692](https://github.com/RebeccaStevens/deepmerge-ts/commit/3d96692386c363e3f4250b267cac1d78231457ff)), closes [#33](https://github.com/RebeccaStevens/deepmerge-ts/issues/33) ### BREAKING CHANGES * some types have changed for `deepmergeCustom` ## [2.0.1](https://github.com/RebeccaStevens/deepmerge-ts/compare/v2.0.0...v2.0.1) (2021-12-22) # [2.0.0](https://github.com/RebeccaStevens/deepmerge-ts/compare/v1.1.7...v2.0.0) (2021-11-22) ### Bug Fixes * add better support for readonly types ([#17](https://github.com/RebeccaStevens/deepmerge-ts/issues/17)) ([ee59064](https://github.com/RebeccaStevens/deepmerge-ts/commit/ee5906448bcc0fabef2a2b8e215d4c309d30b4db)) ### BREAKING CHANGES * interface DeepMergeMergeFunctionURItoKind's signature has changed ## [1.1.7](https://github.com/RebeccaStevens/deepmerge-ts/compare/v1.1.6...v1.1.7) (2021-11-22) ### Bug Fixes * incorrect resulting type when merging 3+ readonly tuples ([#20](https://github.com/RebeccaStevens/deepmerge-ts/issues/20)) ([696a1b2](https://github.com/RebeccaStevens/deepmerge-ts/commit/696a1b21ce225e11e38ee9ef3b92a28cf3ed6a4c)) ## [1.1.6](https://github.com/RebeccaStevens/deepmerge-ts/compare/v1.1.5...v1.1.6) (2021-11-22) ### Performance Improvements * convert recursive types to tail-recursive versions ([#15](https://github.com/RebeccaStevens/deepmerge-ts/issues/15)) ([4401ac2](https://github.com/RebeccaStevens/deepmerge-ts/commit/4401ac2d1651093ab855d3d4bdf6c9628c0767ab)) ## [1.1.5](https://github.com/RebeccaStevens/deepmerge-ts/compare/v1.1.4...v1.1.5) (2021-10-18) ### Bug Fixes * **deno:** deno release fixup ([4b8ca98](https://github.com/RebeccaStevens/deepmerge-ts/commit/4b8ca9868de78228244b099dc2040c4cb16a649d)) ## [1.1.4](https://github.com/RebeccaStevens/deepmerge-ts/compare/v1.1.3...v1.1.4) (2021-10-18) ## [1.1.3](https://github.com/RebeccaStevens/deepmerge-ts/compare/v1.1.2...v1.1.3) (2021-09-21) ### Bug Fixes * order of package exports ([#12](https://github.com/RebeccaStevens/deepmerge-ts/issues/12)) ([4117460](https://github.com/RebeccaStevens/deepmerge-ts/commit/41174607ee57568f123e1a5661f635d5d54f7c0c)) ## [1.1.2](https://github.com/RebeccaStevens/deepmerge-ts/compare/v1.1.1...v1.1.2) (2021-09-17) ### Bug Fixes * current and legacy types trying to using the same file resulting in one being overridden ([#10](https://github.com/RebeccaStevens/deepmerge-ts/issues/10)) ([a5f334b](https://github.com/RebeccaStevens/deepmerge-ts/commit/a5f334b2c4f6735383ea419dd6d3206bcc0afe4a)) ### Performance Improvements * add early escapes to loos when merging unknown types ([17a92e1](https://github.com/RebeccaStevens/deepmerge-ts/commit/17a92e1676a6b6c20f7e3fb1cc966ed5673dccf6)) * directly request enumerable keys so that they don't need to then be filtered ([04a2a5f](https://github.com/RebeccaStevens/deepmerge-ts/commit/04a2a5fb24b1086c8130203451c2836f196e92c6)) * use imperative loops when building merged result of records ([b36f7bc](https://github.com/RebeccaStevens/deepmerge-ts/commit/b36f7bcec43858658c06f8f4ac6deb17a9d7b2fe)) ## [1.1.1](https://github.com/RebeccaStevens/deepmerge-ts/compare/v1.1.0...v1.1.1) (2021-09-16) ### Bug Fixes * add legacy type information ([#6](https://github.com/RebeccaStevens/deepmerge-ts/issues/6)) ([c7e1019](https://github.com/RebeccaStevens/deepmerge-ts/commit/c7e1019f86818fe95b9f6291f2a09f077337a7f9)) * only merge enumerable properties ([#8](https://github.com/RebeccaStevens/deepmerge-ts/issues/8)) ([0967070](https://github.com/RebeccaStevens/deepmerge-ts/commit/0967070d30427bb33f0c78793d61a9411dde3b49)) # [1.1.0](https://github.com/RebeccaStevens/deepmerge-ts/compare/v1.0.1...v1.1.0) (2021-09-13) ### Features * add support for custom merging ([#4](https://github.com/RebeccaStevens/deepmerge-ts/issues/4)) ([5413b81](https://github.com/RebeccaStevens/deepmerge-ts/commit/5413b81c0a568c798ff70081966dd9a0ace5fe3f)) ## [1.0.1](https://github.com/RebeccaStevens/deepmerge-ts/compare/v1.0.0...v1.0.1) (2021-08-25) ### Bug Fixes * husky install no longer runs on postinstall ([7102229](https://github.com/RebeccaStevens/deepmerge-ts/commit/7102229a7078fef17ba2a24c9814a844fb525c67)) # 1.0.0 (2021-08-25) ### Features * add "module" property to package.json ([168747d](https://github.com/RebeccaStevens/deepmerge-ts/commit/168747daef0b49ab8ac3b0491fda965776eef2c2)) * add basic functionality ([8e3ba66](https://github.com/RebeccaStevens/deepmerge-ts/commit/8e3ba66973d6e35cc421149a00a45b7c55c1de45))