		@@ -5,16 +5,32 @@ # Changelog

		The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
		and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
		The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project
		adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).

		## master

		## [3.0.0] - 2020-10-29
		## 3.1.0 - 2020-10-25

		### Chores

		- Updated dependency `jest` to 26.6.1
		- Updated `yarn` to 1.22.10 (via policy)
		- Updated `eslint-config-prettier` to 6.14.0
		- Updated `prettier` to 2.1.2
		- Updated `eslint-plugin-jest` to 24.1.0
		- Updated `eslint` to 7.12.0
		- Prettify and fix typos in README.md (thanks to @friederbluemle)

		### Added

		- Added flag to include pre-release versions in the deduplication process. (thanks to @marcodejongh)

		## 3.0.0- 2020-10-29

		### Breaking

		### Variadic flags
		#### Variadic flags

		Flags `--packages`, `--scopes` and `--exclude` don't support comma-separated values anymore (eg:
		`--packages libA,libB`). Instead, you can pass multiple values per flag (eg: `--packages libA libB`)
		or pass the flag multiple times (eg: `--packages libA --packages libB`).
		or pass the flag multiple times (eg: `--packages libA --packages libB`).

		@@ -33,3 +49,3 @@ If you use one of those flags _and_ you want to specify a custom `yarn.lock` file, you need to use

		## [2.1.0] - 2020-07-10
		## 2.1.0- 2020-07-10

		@@ -48,3 +64,3 @@ ### Chores

		## [2.0.0] - 2020-02-29
		## 2.0.0- 2020-02-29

		@@ -55,9 +71,9 @@ ### Breaks

		## [1.2.0] - 2020-02-29
		## 1.2.0- 2020-02-29

		Edit: Do not use. It breaks Node 8 compatiblity. Use 2.0.0 instead
		Edit: _Do not use. It breaks Node 8 compatiblity. Use 2.0.0 instead_

		### Added

		- Typescript definitions (thanks to @bluelovers)
		- TypeScript definitions (thanks to @bluelovers)
		- Info about the source of duplication to README
		@@ -67,3 +83,3 @@ - CLI option to exclude packages (thanks to @JacobBlomgren)

		## [1.1.1] - 2019-02-03
		## 1.1.1- 2019-02-03

		@@ -75,10 +91,11 @@ ### Fixed

		## [1.1.0] - 2018-12-22
		## 1.1.0- 2018-12-22

		### Added

		- Option `--fail` to exit the process with an error if there are duplicated packages (thanks to @amark)
		- Option `--fail` to exit the process with an error if there are duplicated packages (thanks to
		@amark)
		- If the path to `yarn.lock` is not specified, use `yarn.lock` as the default (thanks to @Joge97)

		## [1.0.5] - 2018-12-15
		## 1.0.5- 2018-12-15

		@@ -91,10 +108,11 @@ ### Changed

		- Moved eslint and stricter to devDependencies (thanks @hawkrives)
		- Re-enabled disabled tests (thanks @amark)
		- Moved eslint and stricter to devDependencies (thanks @hawkrives)
		- Re-enabled disabled tests (thanks @amark)

		## [1.0.4] - 2018-12-12
		## 1.0.4- 2018-12-12

		### Changed

		- Fixes parsing the strategy. Now specifying `-s fewer` actually does something! (thanks to @leipert)
		- Fixes parsing the strategy. Now specifying `-s fewer` actually does something! (thanks to
		@leipert)

		@@ -105,3 +123,3 @@ ### Chores

		## [1.0.3] - 2018-11-22
		## 1.0.3- 2018-11-22

		@@ -112,3 +130,3 @@ ### Changed

		## [1.0.2] - 2018-11-02
		## 1.0.2- 2018-11-02

		@@ -119,10 +137,10 @@ ### Chores

		## [1.0.1] - 2018-11-02
		## 1.0.1- 2018-11-02

		### Chores

		- Removed unused files (tests, local `.history`) from the NPM package. Only `*.js` and
		text files are included now.
		- Removed unused files (tests, local `.history`) from the npm package. Only `*.js` and text files
		are included now.

		## [1.0.0] - 2018-10-31
		## 1.0.0- 2018-10-31

		@@ -152,3 +170,3 @@ ### Breaking

		## [0.4.1] - 2018-06-05
		## 0.4.1- 2018-06-05

		@@ -160,3 +178,3 @@ ### Changed

		## [0.4.0] - 2018-01-18
		## 0.4.0- 2018-01-18

		@@ -163,0 +181,0 @@ ### Added

cli.js

		@@ -28,3 +28,7 @@ #!/usr/bin/env node
		.option('--exclude <exclude...>', 'a list of packages not to deduplicate.')
		.option('--print', 'instead of saving the deduplicated yarn.lock, print the result in stdout');
		.option('--print', 'instead of saving the deduplicated yarn.lock, print the result in stdout')
		.option(
		'--includePrerelease',
		'Include prereleases in version comparisons, e.g. ^1.0.0 will be satisfied by 1.0.1-alpha'
		);

		@@ -66,2 +70,3 @@ commander.parse(process.argv);
		excludePackages: commander.exclude,
		includePrerelease: commander.includePrerelease,
		});
		@@ -68,0 +73,0 @@

CODE_OF_CONDUCT.md

		# Contributor Code of Conduct

		As contributors and maintainers of this project, and in the interest of fostering an open and welcoming community, we pledge to respect all people who contribute through reporting issues, posting feature requests, updating documentation, submitting pull requests or patches, and other activities.
		As contributors and maintainers of this project, and in the interest of fostering an open and
		welcoming community, we pledge to respect all people who contribute through reporting issues,
		posting feature requests, updating documentation, submitting pull requests or patches, and other
		activities.

		We are committed to making participation in this project a harassment-free experience for everyone, regardless of level of experience, gender, gender identity and expression, sexual orientation, disability, personal appearance, body size, race, ethnicity, age, religion, or nationality.
		We are committed to making participation in this project a harassment-free experience for everyone,
		regardless of level of experience, gender, gender identity and expression, sexual orientation,
		disability, personal appearance, body size, race, ethnicity, age, religion, or nationality.

		Examples of unacceptable behavior by participants include:

		* The use of sexualized language or imagery
		* Personal attacks
		* Trolling or insulting/derogatory comments
		* Public or private harassment
		* Publishing other's private information, such as physical or electronic addresses, without explicit permission
		* Submitting contributions or comments that you know to violate the intellectual property or privacy rights of others
		* Other unethical or unprofessional conduct
		- The use of sexualized language or imagery
		- Personal attacks
		- Trolling or insulting/derogatory comments
		- Public or private harassment
		- Publishing other's private information, such as physical or electronic addresses, without explicit
		permission
		- Submitting contributions or comments that you know to violate the intellectual property or privacy
		rights of others
		- Other unethical or unprofessional conduct

		Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
		By adopting this Code of Conduct, project maintainers commit themselves to fairly and consistently applying these principles to every aspect of managing this project. Project maintainers who do not follow or enforce the Code of Conduct may be permanently removed from the project team.
		Project maintainers have the right and responsibility to remove, edit, or reject comments, commits,
		code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, or
		to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate,
		threatening, offensive, or harmful. By adopting this Code of Conduct, project maintainers commit
		themselves to fairly and consistently applying these principles to every aspect of managing this
		project. Project maintainers who do not follow or enforce the Code of Conduct may be permanently
		removed from the project team.

		This Code of Conduct applies both within project spaces and in public spaces when an individual is representing the project or its community.
		This Code of Conduct applies both within project spaces and in public spaces when an individual is
		representing the project or its community.

		Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting a project maintainer. Complaints will result in a response and be reviewed and investigated in a way that is deemed necessary and appropriate to the circumstances. Maintainers are obligated to maintain confidentiality with regard to the reporter of an incident.
		Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting a
		project maintainer. Complaints will result in a response and be reviewed and investigated in a way
		that is deemed necessary and appropriate to the circumstances. Maintainers are obligated to maintain
		confidentiality with regard to the reporter of an incident.

		This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.3.0, available at [http://contributor-covenant.org/version/1/3/0/][version]
		This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.3.0, available
		at [http://contributor-covenant.org/version/1/3/0/][version]

		[homepage]: http://contributor-covenant.org
		[version]: http://contributor-covenant.org/version/1/3/0/

index.js

		@@ -54,3 +54,3 @@ const lockfile = require('@yarnpkg/lockfile');

		const computePackageInstances = (packages, name, useMostCommon) => {
		const computePackageInstances = (packages, name, useMostCommon, includePrerelease = false) => {
		// Instances of this package in the tree
		@@ -78,4 +78,4 @@ const packageInstances = packages[name];
		if (
		semver.validRange(packageInstance.requestedVersion) &&
		semver.satisfies(version, packageInstance.requestedVersion)
		semver.validRange(packageInstance.requestedVersion, { includePrerelease }) &&
		semver.satisfies(version, packageInstance.requestedVersion, { includePrerelease })
		) {
		@@ -103,3 +103,3 @@ satisfies.add(packageInstance);
		}
		return semver.rcompare(versionA, versionB);
		return semver.rcompare(versionA, versionB, { includePrerelease });
		});
		@@ -117,3 +117,3 @@ packageInstance.satisfiedBy = candidateVersions;
		json,
		{ includeScopes, includePackages, excludePackages, useMostCommon }
		{ includeScopes, includePackages, excludePackages, useMostCommon, includePrerelease = false }
		) => {
		@@ -123,3 +123,6 @@ const packages = extractPackages(json, includeScopes, includePackages, excludePackages);
		.reduce(
		(acc, name) => acc.concat(computePackageInstances(packages, name, useMostCommon)),
		(acc, name) =>
		acc.concat(
		computePackageInstances(packages, name, useMostCommon, includePrerelease)
		),
		[]
		@@ -132,3 +135,9 @@ )
		yarnLock,
		{ includeScopes = [], includePackages = [], excludePackages = [], useMostCommon = false } = {}
		{
		includeScopes = [],
		includePackages = [],
		excludePackages = [],
		useMostCommon = false,
		includePrerelease = false,
		} = {}
		) => {
		@@ -143,2 +152,3 @@ const json = parseYarnLock(yarnLock);
		useMostCommon,
		includePrerelease,
		}).forEach(({ bestVersion, name, installedVersion, requestedVersion }) => {
		@@ -155,3 +165,9 @@ result.push(
		yarnLock,
		{ includeScopes = [], includePackages = [], excludePackages = [], useMostCommon = false } = {}
		{
		includeScopes = [],
		includePackages = [],
		excludePackages = [],
		useMostCommon = false,
		includePrerelease = false,
		} = {}
		) => {
		@@ -165,2 +181,3 @@ const json = parseYarnLock(yarnLock);
		useMostCommon,
		includePrerelease,
		}).forEach(({ bestVersion, name, versions, requestedVersion }) => {
		@@ -167,0 +184,0 @@ json[`${name}@${requestedVersion}`] = versions[bestVersion].pkg;

274

LICENSE.md

		@@ -1,2 +0,1 @@

		Apache License
		@@ -6,176 +5,137 @@ Version 2.0, January 2004

		TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
		TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

		1. Definitions.
		1. Definitions.

		"License" shall mean the terms and conditions for use, reproduction,
		and distribution as defined by Sections 1 through 9 of this document.
		"License" shall mean the terms and conditions for use, reproduction, and distribution as defined
		by Sections 1 through 9 of this document.

		"Licensor" shall mean the copyright owner or entity authorized by
		the copyright owner that is granting the License.
		"Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is
		granting the License.

		"Legal Entity" shall mean the union of the acting entity and all
		other entities that control, are controlled by, or are under common
		control with that entity. For the purposes of this definition,
		"control" means (i) the power, direct or indirect, to cause the
		direction or management of such entity, whether by contract or
		otherwise, or (ii) ownership of fifty percent (50%) or more of the
		outstanding shares, or (iii) beneficial ownership of such entity.
		"Legal Entity" shall mean the union of the acting entity and all other entities that control, are
		controlled by, or are under common control with that entity. For the purposes of this definition,
		"control" means (i) the power, direct or indirect, to cause the direction or management of such
		entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the
		outstanding shares, or (iii) beneficial ownership of such entity.

		"You" (or "Your") shall mean an individual or Legal Entity
		exercising permissions granted by this License.
		"You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this
		License.

		"Source" form shall mean the preferred form for making modifications,
		including but not limited to software source code, documentation
		source, and configuration files.
		"Source" form shall mean the preferred form for making modifications, including but not limited
		to software source code, documentation source, and configuration files.

		"Object" form shall mean any form resulting from mechanical
		transformation or translation of a Source form, including but
		not limited to compiled object code, generated documentation,
		and conversions to other media types.
		"Object" form shall mean any form resulting from mechanical transformation or translation of a
		Source form, including but not limited to compiled object code, generated documentation, and
		conversions to other media types.

		"Work" shall mean the work of authorship, whether in Source or
		Object form, made available under the License, as indicated by a
		copyright notice that is included in or attached to the work
		(an example is provided in the Appendix below).
		"Work" shall mean the work of authorship, whether in Source or Object form, made available under
		the License, as indicated by a copyright notice that is included in or attached to the work (an
		example is provided in the Appendix below).

		"Derivative Works" shall mean any work, whether in Source or Object
		form, that is based on (or derived from) the Work and for which the
		editorial revisions, annotations, elaborations, or other modifications
		represent, as a whole, an original work of authorship. For the purposes
		of this License, Derivative Works shall not include works that remain
		separable from, or merely link (or bind by name) to the interfaces of,
		the Work and Derivative Works thereof.
		"Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or
		derived from) the Work and for which the editorial revisions, annotations, elaborations, or other
		modifications represent, as a whole, an original work of authorship. For the purposes of this
		License, Derivative Works shall not include works that remain separable from, or merely link (or
		bind by name) to the interfaces of, the Work and Derivative Works thereof.

		"Contribution" shall mean any work of authorship, including
		the original version of the Work and any modifications or additions
		to that Work or Derivative Works thereof, that is intentionally
		submitted to Licensor for inclusion in the Work by the copyright owner
		or by an individual or Legal Entity authorized to submit on behalf of
		the copyright owner. For the purposes of this definition, "submitted"
		means any form of electronic, verbal, or written communication sent
		to the Licensor or its representatives, including but not limited to
		communication on electronic mailing lists, source code control systems,
		and issue tracking systems that are managed by, or on behalf of, the
		Licensor for the purpose of discussing and improving the Work, but
		excluding communication that is conspicuously marked or otherwise
		designated in writing by the copyright owner as "Not a Contribution."
		"Contribution" shall mean any work of authorship, including the original version of the Work and
		any modifications or additions to that Work or Derivative Works thereof, that is intentionally
		submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or
		Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this
		definition, "submitted" means any form of electronic, verbal, or written communication sent to
		the Licensor or its representatives, including but not limited to communication on electronic
		mailing lists, source code control systems, and issue tracking systems that are managed by, or on
		behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding
		communication that is conspicuously marked or otherwise designated in writing by the copyright
		owner as "Not a Contribution."

		"Contributor" shall mean Licensor and any individual or Legal Entity
		on behalf of whom a Contribution has been received by Licensor and
		subsequently incorporated within the Work.
		"Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a
		Contribution has been received by Licensor and subsequently incorporated within the Work.

		2. Grant of Copyright License. Subject to the terms and conditions of
		this License, each Contributor hereby grants to You a perpetual,
		worldwide, non-exclusive, no-charge, royalty-free, irrevocable
		copyright license to reproduce, prepare Derivative Works of,
		publicly display, publicly perform, sublicense, and distribute the
		Work and such Derivative Works in Source or Object form.
		2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor
		hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable
		copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform,
		sublicense, and distribute the Work and such Derivative Works in Source or Object form.

		3. Grant of Patent License. Subject to the terms and conditions of
		this License, each Contributor hereby grants to You a perpetual,
		worldwide, non-exclusive, no-charge, royalty-free, irrevocable
		(except as stated in this section) patent license to make, have made,
		use, offer to sell, sell, import, and otherwise transfer the Work,
		where such license applies only to those patent claims licensable
		by such Contributor that are necessarily infringed by their
		Contribution(s) alone or by combination of their Contribution(s)
		with the Work to which such Contribution(s) was submitted. If You
		institute patent litigation against any entity (including a
		cross-claim or counterclaim in a lawsuit) alleging that the Work
		or a Contribution incorporated within the Work constitutes direct
		or contributory patent infringement, then any patent licenses
		granted to You under this License for that Work shall terminate
		as of the date such litigation is filed.
		3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor
		hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable
		(except as stated in this section) patent license to make, have made, use, offer to sell, sell,
		import, and otherwise transfer the Work, where such license applies only to those patent claims
		licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or
		by combination of their Contribution(s) with the Work to which such Contribution(s) was
		submitted. If You institute patent litigation against any entity (including a cross-claim or
		counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work
		constitutes direct or contributory patent infringement, then any patent licenses granted to You
		under this License for that Work shall terminate as of the date such litigation is filed.

		4. Redistribution. You may reproduce and distribute copies of the
		Work or Derivative Works thereof in any medium, with or without
		modifications, and in Source or Object form, provided that You
		meet the following conditions:
		4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof
		in any medium, with or without modifications, and in Source or Object form, provided that You
		meet the following conditions:

		(a) You must give any other recipients of the Work or
		Derivative Works a copy of this License; and
		(a) You must give any other recipients of the Work or Derivative Works a copy of this License;
		and

		(b) You must cause any modified files to carry prominent notices
		stating that You changed the files; and
		(b) You must cause any modified files to carry prominent notices stating that You changed the
		files; and

		(c) You must retain, in the Source form of any Derivative Works
		that You distribute, all copyright, patent, trademark, and
		attribution notices from the Source form of the Work,
		excluding those notices that do not pertain to any part of
		the Derivative Works; and
		(c) You must retain, in the Source form of any Derivative Works that You distribute, all
		copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding
		those notices that do not pertain to any part of the Derivative Works; and

		(d) If the Work includes a "NOTICE" text file as part of its
		distribution, then any Derivative Works that You distribute must
		include a readable copy of the attribution notices contained
		within such NOTICE file, excluding those notices that do not
		pertain to any part of the Derivative Works, in at least one
		of the following places: within a NOTICE text file distributed
		as part of the Derivative Works; within the Source form or
		documentation, if provided along with the Derivative Works; or,
		within a display generated by the Derivative Works, if and
		wherever such third-party notices normally appear. The contents
		of the NOTICE file are for informational purposes only and
		do not modify the License. You may add Your own attribution
		notices within Derivative Works that You distribute, alongside
		or as an addendum to the NOTICE text from the Work, provided
		that such additional attribution notices cannot be construed
		as modifying the License.
		(d) If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative
		Works that You distribute must include a readable copy of the attribution notices contained
		within such NOTICE file, excluding those notices that do not pertain to any part of the
		Derivative Works, in at least one of the following places: within a NOTICE text file distributed
		as part of the Derivative Works; within the Source form or documentation, if provided along with
		the Derivative Works; or, within a display generated by the Derivative Works, if and wherever
		such third-party notices normally appear. The contents of the NOTICE file are for informational
		purposes only and do not modify the License. You may add Your own attribution notices within
		Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the
		Work, provided that such additional attribution notices cannot be construed as modifying the
		License.

		You may add Your own copyright statement to Your modifications and
		may provide additional or different license terms and conditions
		for use, reproduction, or distribution of Your modifications, or
		for any such Derivative Works as a whole, provided Your use,
		reproduction, and distribution of the Work otherwise complies with
		the conditions stated in this License.
		You may add Your own copyright statement to Your modifications and may provide additional or
		different license terms and conditions for use, reproduction, or distribution of Your
		modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and
		distribution of the Work otherwise complies with the conditions stated in this License.

		5. Submission of Contributions. Unless You explicitly state otherwise,
		any Contribution intentionally submitted for inclusion in the Work
		by You to the Licensor shall be under the terms and conditions of
		this License, without any additional terms or conditions.
		Notwithstanding the above, nothing herein shall supersede or modify
		the terms of any separate license agreement you may have executed
		with Licensor regarding such Contributions.
		5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution
		intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms
		and conditions of this License, without any additional terms or conditions. Notwithstanding the
		above, nothing herein shall supersede or modify the terms of any separate license agreement you
		may have executed with Licensor regarding such Contributions.

		6. Trademarks. This License does not grant permission to use the trade
		names, trademarks, service marks, or product names of the Licensor,
		except as required for reasonable and customary use in describing the
		origin of the Work and reproducing the content of the NOTICE file.
		6. Trademarks. This License does not grant permission to use the trade names, trademarks, service
		marks, or product names of the Licensor, except as required for reasonable and customary use in
		describing the origin of the Work and reproducing the content of the NOTICE file.

		7. Disclaimer of Warranty. Unless required by applicable law or
		agreed to in writing, Licensor provides the Work (and each
		Contributor provides its Contributions) on an "AS IS" BASIS,
		WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
		implied, including, without limitation, any warranties or conditions
		of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
		PARTICULAR PURPOSE. You are solely responsible for determining the
		appropriateness of using or redistributing the Work and assume any
		risks associated with Your exercise of permissions under this License.
		7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor
		provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT
		WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation,
		any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
		PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or
		redistributing the Work and assume any risks associated with Your exercise of permissions under
		this License.

		8. Limitation of Liability. In no event and under no legal theory,
		whether in tort (including negligence), contract, or otherwise,
		unless required by applicable law (such as deliberate and grossly
		negligent acts) or agreed to in writing, shall any Contributor be
		liable to You for damages, including any direct, indirect, special,
		incidental, or consequential damages of any character arising as a
		result of this License or out of the use or inability to use the
		Work (including but not limited to damages for loss of goodwill,
		work stoppage, computer failure or malfunction, or any and all
		other commercial damages or losses), even if such Contributor
		has been advised of the possibility of such damages.
		8. Limitation of Liability. In no event and under no legal theory, whether in tort (including
		negligence), contract, or otherwise, unless required by applicable law (such as deliberate and
		grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for
		damages, including any direct, indirect, special, incidental, or consequential damages of any
		character arising as a result of this License or out of the use or inability to use the Work
		(including but not limited to damages for loss of goodwill, work stoppage, computer failure or
		malfunction, or any and all other commercial damages or losses), even if such Contributor has
		been advised of the possibility of such damages.

		9. Accepting Warranty or Additional Liability. While redistributing
		the Work or Derivative Works thereof, You may choose to offer,
		and charge a fee for, acceptance of support, warranty, indemnity,
		or other liability obligations and/or rights consistent with this
		License. However, in accepting such obligations, You may act only
		on Your own behalf and on Your sole responsibility, not on behalf
		of any other Contributor, and only if You agree to indemnify,
		defend, and hold each Contributor harmless for any liability
		incurred by, or claims asserted against, such Contributor by reason
		of your accepting any such warranty or additional liability.
		9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works
		thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty,
		indemnity, or other liability obligations and/or rights consistent with this License. However, in
		accepting such obligations, You may act only on Your own behalf and on Your sole responsibility,
		not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each
		Contributor harmless for any liability incurred by, or claims asserted against, such Contributor
		by reason of your accepting any such warranty or additional liability.

		END OF TERMS AND CONDITIONS
		END OF TERMS AND CONDITIONS

		APPENDIX: How to apply the Apache License to your work.
		APPENDIX: How to apply the Apache License to your work.

		@@ -191,14 +151,12 @@ To apply the Apache License to your work, attach the following

		Copyright [yyyy] [name of copyright owner]
		Copyright [yyyy] [name of copyright owner]

		Licensed under the Apache License, Version 2.0 (the "License");
		you may not use this file except in compliance with the License.
		You may obtain a copy of the License at
		Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
		compliance with the License. You may obtain a copy of the License at

		http://www.apache.org/licenses/LICENSE-2.0

		Unless required by applicable law or agreed to in writing, software
		distributed under the License is distributed on an "AS IS" BASIS,
		WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		See the License for the specific language governing permissions and
		limitations under the License.
		Unless required by applicable law or agreed to in writing, software distributed under the License is
		distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
		implied. See the License for the specific language governing permissions and limitations under the
		License.

package.json

		{
		"name": "yarn-deduplicate",
		"version": "3.0.0",
		"version": "3.1.0",
		"bin": "./cli.js",
		@@ -38,9 +38,10 @@ "description": "Deduplication tool for yarn.lock files",
		"devDependencies": {
		"eslint": "^7.7.0",
		"eslint-config-prettier": "^6.11.0",
		"eslint-plugin-jest": "^23.20.0",
		"eslint": "^7.12.0",
		"eslint-config-prettier": "^6.14.0",
		"eslint-plugin-jest": "^24.1.0",
		"eslint-plugin-md": "^1.0.19",
		"eslint-plugin-prettier": "^3.1.4",
		"jest": "^26.4.2",
		"jest": "^26.6.1",
		"outdent": "^0.7.1",
		"prettier": "^2.1.1"
		"prettier": "^2.1.2"
		},
		@@ -47,0 +48,0 @@ "jest": {

131

README.md

		@@ -1,6 +0,8 @@
		Builds: ![Node.js CI](https://github.com/atlassian/yarn-deduplicate/workflows/Node.js%20CI/badge.svg)
		# yarn-deduplicate

		This package only works with Yarn v1. Yarn v2 supports package deduplcatiion [natively](https://github.com/yarnpkg/berry/pull/1558)!
		Builds:
		![Node.js CI](https://github.com/atlassian/yarn-deduplicate/workflows/Node.js%20CI/badge.svg)

		# Yarn deduplicate
		This package only works with Yarn v1. Yarn v2 supports package deduplication
		[natively](https://github.com/yarnpkg/berry/pull/1558)!

		@@ -10,4 +12,4 @@ Cleans up `yarn.lock` by removing duplicates.
		A duplicate package is when two dependencies are resolved to a different version, even when a single
		version matches the range specified in the dependencies. See the [Deduplication
		strategies](#deduplication-strategies) section for a few examples.
		version matches the range specified in the dependencies. See the
		[Deduplication strategies](#deduplication-strategies) section for a few examples.

		@@ -18,3 +20,3 @@ ## Installation

		```bash
		```sh
		npm install -g yarn-deduplicate
		@@ -25,8 +27,9 @@ ```

		```bash
		```sh
		yarn global add yarn-deduplicate
		```

		This package also works wth [npx](https://medium.com/@maybekatz/introducing-npx-an-npm-package-runner-55f7d4bd282b),
		so you don't need to install it.
		This package also works wth
		[npx](https://medium.com/@maybekatz/introducing-npx-an-npm-package-runner-55f7d4bd282b), so you
		don't need to install it.

		@@ -39,3 +42,3 @@ ---

		```bash
		```sh
		yarn-deduplicate yarn.lock
		@@ -50,3 +53,3 @@ ```

		```bash
		```sh
		yarn-deduplicate --help
		@@ -87,3 +90,3 @@ ```

		This is, however, not exactly true. There are cases where yarn will not deduplicate existing
		This is, however, not exactly true. There are cases where yarn will _not_ deduplicate existing
		packages. For example, this scenario:
		@@ -100,2 +103,3 @@
		Find more examples in:

		- [yarn-deduplicate — The Hero We Need](https://medium.com/@bnaya/yarn-deduplicate-the-hero-we-need-f4497a362128)
		@@ -109,14 +113,14 @@ - [De-duplicating yarn.lock](https://medium.com/@scinos/de-duplicating-yarn-lock-ae30be4aa41a)

		`highest`
		It will try to use the highest installed version. For example, with the following `yarn.lock`:
		`highest` will try to use the highest installed version. For example, with the following
		`yarn.lock`:

		```
		```text
		library@^1.1.0:
		version "1.2.0"
		version "1.2.0"

		library@^1.2.0:
		version "1.2.0"
		version "1.2.0"

		library@^1.3.0:
		version "1.3.0"
		version "1.3.0"
		```
		@@ -126,15 +130,14 @@

		`fewer`
		It will try to minimize the number of installed versions by trying to deduplicate to the version
		that satisfies most of the ranges first. For example, with the following `yarn.lock`:
		`fewer` will try to minimize the number of installed versions by trying to deduplicate to the
		version that satisfies most of the ranges first. For example, with the following `yarn.lock`:

		```
		```text
		library@*:
		version "2.0.0"
		version "2.0.0"

		library@>=1.1.0:
		version "3.0.0"
		version "3.0.0"

		library@^1.2.0:
		version "1.2.0"
		version "1.2.0"
		```
		@@ -144,5 +147,4 @@

		Note that this will cause some packages to downgrade it version. Be sure to check the changelogs
		between all versions and understand the consequences of that downgrade. If unsure, don't use this
		strategy.
		Note that this may cause some packages to be downgraded. Be sure to check the changelogs between
		all versions and understand the consequences of that downgrade. If unsure, don't use this strategy.

		@@ -158,5 +160,5 @@ It is not recommended to use different strategies for different packages. There is no guarantee that
		Receives a list of packages to deduplicate. It will ignore any other duplicated package not in the
		list. This option is recommended when the number of duplicated packages in `yarn.lock` is too big
		to be easily reviewed by a human. This will allow for a more controlled and progressive
		deduplication of `yarn.lock`.
		list. This option is recommended when the number of duplicated packages in `yarn.lock` is too big to
		be easily reviewed by a human. This will allow for a more controlled and progressive deduplication
		of `yarn.lock`.

		@@ -166,6 +168,16 @@ `--scopes <scope1> <scope2> <scopeN>`
		Receives a list of scopes to deduplicate. It will ignore any other duplicated package not in the
		list. This option is recommended when deduplicating a large number of inter-dependent packages
		from a single scope, such as @babel. This will allow for a more controlled and progressive
		deduplication of `yarn.lock` without specifying each package individually.
		list. This option is recommended when deduplicating a large number of inter-dependent packages from
		a single scope, such as @babel. This will allow for a more controlled and progressive deduplication
		of `yarn.lock` without specifying each package individually.

		### Pre-release versions

		By default, `yarn-deduplicate` will only match pre-release versions if they share they share the
		same `mayor`, `minor` and `patch` versions (example: `^1.2.3-alpha.1` and `1.2.3-alpha.2` can be
		deduplicated, but `^1.2.3` and `1.2.4-alpha.1` can't). This matches the behaviour of
		[semver](https://docs.npmjs.com/misc/semver#prerelease-tags).

		To change this behaviour you can use the flag `--includePrerelease`. This will treat all pre-release
		versionas as if they were normal versions (`^1.2.3` and `1.2.4-alpha.1` can be deduplicated).

		### Usage in CI
		@@ -176,3 +188,3 @@

		```bash
		```sh
		# Print the list of duplicated packages and exit with status 1
		@@ -194,3 +206,3 @@ yarn-deduplicate --list --fail

		```bash
		```sh
		#Old
		@@ -208,6 +220,6 @@ yarn-deduplicate --packages libA,libB
		A consequence of this change is that if you were using one or more of the affected options (
		`--packages`, `--scopes` or `--exclude`) __and__ a custom path for `yarn.lock`, you need to use `--`
		`--packages`, `--scopes` or `--exclude`) and a custom path for `yarn.lock`, you need to use `--`
		to "stop" package/scope/exclude parsing:

		```bash
		```sh
		yarn-deduplicate --packages libA libB -- path/to/yarn.lock
		@@ -223,3 +235,3 @@ ```

		```bash
		```sh
		# Old
		@@ -234,3 +246,3 @@ npm install -g yarn-tools

		```bash
		```sh
		# Old
		@@ -244,3 +256,4 @@ yarn-tools list-duplicates path/to/yarn.lock
		### Deduplicate yarn.lock
		```bash

		```sh
		# Old
		@@ -255,3 +268,4 @@ yarn-tools fix-duplicates path/to/yarn.lock > tmp
		### Limit packages to deduplicate yarn.lock
		```bash

		```sh
		# Old
		@@ -269,28 +283,25 @@ yarn-tools fix-duplicates path/to/yarn.lock package1 package2

		* Add tests for new features and bug fixes
		* Follow the existing style
		* Separate unrelated changes into multiple pull requests
		- Add tests for new features and bug fixes
		- Follow the existing style
		- Separate unrelated changes into multiple pull requests

		See the existing issues for things to start contributing.

		For bigger changes, make sure you start a discussion first by creating
		an issue and explaining the intended change.
		For bigger changes, make sure you start a discussion first by creating an issue and explaining the
		intended change.

		Atlassian requires contributors to sign a Contributor License Agreement,
		known as a CLA. This serves as a record stating that the contributor is
		entitled to contribute the code/documentation/translation to the project
		and is willing to have it used in distributions and derivative works
		(or is willing to transfer ownership).
		Atlassian requires contributors to sign a Contributor License Agreement, known as a CLA. This serves
		as a record stating that the contributor is entitled to contribute the
		code/documentation/translation to the project and is willing to have it used in distributions and
		derivative works (or is willing to transfer ownership).

		Prior to accepting your contributions we ask that you please follow the appropriate
		link below to digitally sign the CLA. The Corporate CLA is for those who are
		contributing as a member of an organization and the individual CLA is for
		those contributing as an individual.
		Prior to accepting your contributions we ask that you please follow the appropriate link below to
		digitally sign the CLA. The Corporate CLA is for those who are contributing as a member of an
		organization and the individual CLA is for those contributing as an individual.

		* [CLA for corporate contributors](https://opensource.atlassian.com/corporate)
		* [CLA for individuals](https://opensource.atlassian.com/individual)
		- [CLA for corporate contributors](https://opensource.atlassian.com/corporate)
		- [CLA for individuals](https://opensource.atlassian.com/individual)

		## License

		Copyright (c) 2017 Atlassian and others.
		Apache 2.0 licensed, see [LICENSE.txt](LICENSE.txt) file.
		Copyright (c) 2017 Atlassian and others. Apache 2.0 licensed, see [LICENSE.txt](LICENSE.txt) file.

yarn-deduplicate - npm Package Compare versions

New alerts

Fixed alerts

Improved metrics

Worsened metrics