Sourced fromcommander's releases.

v5.1.0

Added

• support for multiple command aliases, the first of which is shown in the auto-generated help (#531,#1236)
• configuration support inaddCommand() forhidden andisDefault (#1232)

Fixed

• omit masked help flags from the displayed help (#645,#1247)
• remove old short help flag when change help flags usinghelpOption (#1248)

Changed

• remove use ofarguments to improve auto-generated help in editors (#1235)
• rename.command() configurationnoHelp tohidden (but not remove old support) (#1232)
• improvements to documentation
• update dependencies
• update tested versions of node
• eliminate lint errors in TypeScript (#1208)

v5.0.0

Added

• support for nested commands with action-handlers (#1#764#1149)
• .addCommand() for adding a separately configured command (#764#1149)
• allow a non-executable to be set as the default command (#742#1149)
• implicit help command when there are subcommands (previously only if executables) (#1149)
• customise implicit help command with.addHelpCommand() (#1149)
• display error message for unknown subcommand, by default (#432#1088#1149)
• display help for missing subcommand, by default (#1088#1149)
• combined short options as single argument may include boolean flags and value flag and value (e.g.-a -b -p 80 can be written as-abp80) (#1145)
• .parseOption() includes short flag and long flag expansions (#1145)
• .helpInformation() returns help text as a string, previously a private routine (#1169)
• .parse() implicitly usesprocess.argv if arguments not specified (#1172)
• optionally specify where.parse() arguments "from", if not following node conventions (#512#1172)
• suggest help option along with unknown command error (#1179)
• TypeScript definition forcommands property ofCommand (#1184)
• exportprogram property (#1195)
• createCommand factory method to simplify subclassing (#1191)

Fixed

• preserve argument order in subcommands (#508#962#1138)
• do not emitcommand:* for executable subcommands (#809#1149)
• action handler called whether or not there are non-option arguments (#1062#1149)
• combining option short flag and value in single argument now works for subcommands (#1145)
• only add implicit help command when it will not conflict with other uses of argument (#1153#1149)
• implicit help command works with command aliases (#948#1149)
• options are validated whether or not there is an action handler (#1149)

... (truncated)

Sourced fromcommander's changelog.

[5.1.0] (2020-04-25)

Added

• support for multiple command aliases, the first of which is shown in the auto-generated help (#531,#1236)
• configuration support inaddCommand() forhidden andisDefault (#1232)

Fixed

• omit masked help flags from the displayed help (#645,#1247)
• remove old short help flag when change help flags usinghelpOption (#1248)

Changed

• remove use ofarguments to improve auto-generated help in editors (#1235)
• rename.command() configurationnoHelp tohidden (but not remove old support) (#1232)
• improvements to documentation
• update dependencies
• update tested versions of node
• eliminate lint errors in TypeScript (#1208)

[5.0.0] (2020-03-14)

Added

• support for nested commands with action-handlers (#1#764#1149)
• .addCommand() for adding a separately configured command (#764#1149)
• allow a non-executable to be set as the default command (#742#1149)
• implicit help command when there are subcommands (previously only if executables) (#1149)
• customise implicit help command with.addHelpCommand() (#1149)
• display error message for unknown subcommand, by default (#432#1088#1149)
• display help for missing subcommand, by default (#1088#1149)
• combined short options as single argument may include boolean flags and value flag and value (e.g.-a -b -p 80 can be written as-abp80) (#1145)
• .parseOption() includes short flag and long flag expansions (#1145)
• .helpInformation() returns help text as a string, previously a private routine (#1169)
• .parse() implicitly usesprocess.argv if arguments not specified (#1172)
• optionally specify where.parse() arguments "from", if not following node conventions (#512#1172)
• suggest help option along with unknown command error (#1179)
• TypeScript definition forcommands property ofCommand (#1184)
• exportprogram property (#1195)
• createCommand factory method to simplify subclassing (#1191)

Fixed

• preserve argument order in subcommands (#508#962#1138)
• do not emitcommand:* for executable subcommands (#809#1149)
• action handler called whether or not there are non-option arguments (#1062#1149)
• combining option short flag and value in single argument now works for subcommands (#1145)
• only add implicit help command when it will not conflict with other uses of argument (#1153#1149)
• implicit help command works with command aliases (#948#1149)

... (truncated)

• 6405325 Prepare for release (#1255)
• 8c9cfbb Add Node.js 14 to the CI settings of GitHub Actions (#1253)
• b8baafb Update dependencies (#1251)
• e1966fc Omit the help flags from help that are masked by other options (#1247)
• 56221f7 Allow helpOption to only include long flag (#1248)
• 28e8d3f Add support for multiple aliases (#1236)
• b59adfc Replace use of arguments.length (#1235)
• b5d95ee Add opts to addCommand, and rename noHelp to hidden (#1232)
• 8ec3e7f Consistently refer to returning this for chaining (not parent) (#1231)
• 2c0a237 Remove most uses of top-level, as less accurate now with command nesting. (#1...
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