v2.8.1

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• Preserve empty block literals (#​634)

v2.8.0

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• Add node cache for faster alias resolution (#​612)
• Re-introduce compatibility with Node.js 14.6 (#​614)
• Add --merge option to CLI tool (#​611)
• Improve error for tag resolution error on null value (#​616)
• Allow empty string as plain scalar representation, for failsafe schema (#​616)
• docs: include cli example (#​617)

v2.7.1

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• Do not allow seq with single-line collection value on same line with map key (#​603)
• Improve warning & avoid TypeError on bad YAML 1.1 nodes (#​610)

v2.7.0

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The library is now available on JSR as @​eemeli/yaml and on deno.land/x as yaml. In addition to Node.js and browsers, it should work in Deno, Bun, and Cloudflare Workers.

• Use .ts extension in all relative imports (#​591)
• Ignore newline after block seq indicator as space before value (#​590)
• Require Node.js 14.18 or later (was 14.6) (#​598)

v2.6.1

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• Do not strip :00 seconds from !!timestamp values (#​578, with thanks to @​qraynaud)
• Tighten regexp for JSON !!bool (#​587, with thanks to @​vra5107)
• Default to literal block scalar if folded would overflow (#​585)

v2.6.0

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• Use a proper tag for !!merge << keys (#​580)
• Add stringKeys parse option (#​581)
• Stringify a Document as a Document (#​576)
• Add sponsorship by Manifest

v2.5.1

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• Include range in flow sequence pair maps (#​573)

v2.5.0

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• Add --indent option to CLI tool (#​559, with thanks to @​danielbayley)
• Require newline in all cases for props on block sequence (#​557)
• Always reset indentation in lexer on ... (#​558)
• Ignore minContentWidth if greater than lineWidth (#​562)
• Drop unused Collection.maxFlowStringSingleLineLength (#​522, #​421)

v2.4.5

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• Improve tab handling (#​553, yaml-test-suite tests DK95 & Y79Y)

v2.4.4

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With special thanks to @​RedCMD for finding and reporting all of the following:

• Allow comment after top-level block scalar with explicit indent indicator (#​547)
• Allow tab as indent for line comments before nodes (#​548)
• Do not allow tab before block collection (#​549)
• In flow collections, allow []{} immediately after : with plain key (#​550)
• Require indentation for ? explicit-key contents (#​551)
• Require indentation from block scalar header & flow collections in mapping values (#​553)

v2.4.3

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• Improve error when parsing a non-string value (#​459)
• Do not parse -.NaN or +.nan as NaN (#​546)
• Support # within %TAG prefixes with trailing #comments
• Check for non-node complex keys when stringifying with simpleKeys (#​541)

v2.4.2

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• Restrict YAML 1.1 boolean strings to their explicit capitalization (#​530)
• Add sponsorship by Scipress (#​536)

v2.4.1

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• cst: Do not drop trailing newline after line comment in block-map if followed by unindented block-seq value (#​525)
• Stringify flow collection comments in parent (#​528)
• Do not skip folding lines after the first in indented block scalars (#​529)

v2.4.0

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• Add a command-line tool (#​523)
• Use the lineWidth option for line breaking in flow collections (#​522)

v2.3.4

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• Do not throw for carriage return in tag shorthand (#​501)

v2.3.3

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• Do not throw error on malformed URI escape in tag (#​498)