v1.5.1

• Apply previous document directives in YAML 1.1 streams (#109)
• Fix export of Type from "yaml/util"
• Update dependencies

v1.5.0

New Features

• Refactor exports (#99, #107)
  • In addition to main export, use only yaml/parse-cst, yaml/types and yaml/util
  • Drop public export of custom tag objects
  • Rename tags option as customTags, and allow/prefer string identifiers for built-in custom tags
  • Add warnings to deprecated endpoints (set _YAML_SILENCE_DEPRECATION_WARNINGS to disable)
  • Drop babel-plugin-add-module-exports, using instead custom untranspiled CommonJS files for public exports
• Add protection for exponential entity expansion attacks, such as Billion laughs and quadratic expansion attacks (#104)
  • Add maxAliasCount option, defaulting to max 100 aliases for any anchor
  • For Object, stringify mapping key as YAML rather than JSON
• Simplify custom tag creation
  • Add default stringifier (item, ...) => item.toString(...) for collections
  • Add Schema#createPair(key, value, ctx); drop create{Map,Seq} exports
  • Improve & expand documentation on custom tags
• Preserve float formatting when parsed to Document (#97)
  • Add optional minFractionDigits property to numbers
  • Add EXP format handling for float numbers
  • Allow scalar resolvers to return a Scalar instance
• Add prettyErrors option, which makes errors prettier and drops their source reference (#96)
• Add common ancestor YAMLError for error classes
• Reorganise files, e.g. separating tags/ from schema/ and adding constants.js

Bugfixes

• Tag presence in AST node now corresponds to explicit tags in YAML source (#97)
• Add Pair#addToJSMap(ctx, map), fixing merge of anchor seq with mapAsMap: true

v1.4.0

New Features

• Add @babel/runtime as a dependency for use via "browser" (#83)
• Support circular objects, representing circular references using YAML alias nodes when encountered during YAML.stringify() (#84)
• Deprecate the class attribute of tags, replacing it with the more generic identify(value) (#86)
• Turn the string stringifier into a generic scalar stringifier, fallback to it by default, and export it as stringify() from yaml/schema (#86)
• Add yaml-playground as a git submodule, extending ESLint rules
• Add start script, providing an interactive node env with YAML defined

Bugfixes

• Drop overeager browser polyfill generation; use playground/src/polyfill.js instead
• Add BrowserStack tests to Travis CI
• Accept arrays of tag objects as values of tags option (#90)
• Allow for blank lines after less-indented comments (#91)

v1.3.2

• Prevent clashes between the namespaces of top-level Nodes and their values (82ac5a8)
• Stringify pairs with single-line flow collection values on a single line (#85)
• Fix stringification of objects set in collection values (#87)

v1.3.1

• Use one- rather than zero-based indexing for line/col positions (f117880)

v1.3.0

New Features

• Add context.root and rangeAsLinePos to CST nodes (#67, #68)
• Add collection accessor methods (#74)
  • New methods: add/delete/get/has/set and addIn/deleteIn/getIn/hasIn/setIn
  • Available on all collections as well as documents containing a collection
• Include a separate browser build in the release (#73)
  • Used by Webpack, Rollup, etc. via the "browser" value in package.json
  • Uses a Browserslist config of > 0.5%, not dead to (currently) support at least IE 11
  • Has a dependency on @babel/runtime that is not included in the package.json dependencies
• Optimise the Node.js release to leave out unnecessary polyfills (87beb89)
• Run CI tests on latest, LTS & 6.0.0 versions of Node.js (#70, #73)
• Move & reorganise test files under tests/ (12876df)
• Add .editorconfig (#69)

Bugfixes

• Add missing tag value to !!set (#78)
• Improve tag matcher test to allow supporting Symbols (#79)

v1.2.1

• Keep empty line in comment lost during parsing (#75, #76)

v1.2.0

New Features

• Support blank lines (#64)
  • Add BLANK_LINE nodes to the CST
  • Add a boolean property spaceBefore for all AST nodes
  • cst: Assign comments & blank lines at end of collection to parent unless sufficiently indented
  • Always separate document comments from the rest by a blank line
• Add missing YAML 1.1 collections: !!omap, !!pairs, and !!set (#65)
• Add tag argument for createNode(), along with its refactored schema-specific implementation (29f399b)
• Add optional createNode and nodeClass properties to tag objects (bcb8d9c, 3ae63bc)
• Add property based tests using fast-check, thanks to @dubzzz (#62)

Bugfixes

• Fix parsing of minimal strings: '', '-', '?', ':' (#61)
• Revert earlier fix for #48, which is now properly handled thanks to the fix for #57 (#59)
• cst/ParseContext: Stop advancing node.range.end past newline (08571ff)
• cst/PlainValue: Limit valueRange.end to actual value end (0001333)
• cst: Stop breaking the spec by allowing tab indents for map values (572f540)
• Stop aliasing Pair comment to the comment of its value (9b49ddb, 6d3cb36):

  key: # this is now a pair comment
    value

• Render maps with all null values as ? a\n? b\n or { a, b } (40b7a2a)

v1.1.0

New Features

• Support for JavaScript Set, Map and other iterable objects. When stringifying or creating nodes, this is automatic; Map and its descendants turn into YAML mappings, while other iterables become sequences. When parsing, a new option mapAsMap creates Maps rather than Objects from YAML mappings. (#46, #49, #50, #51)
• Add a new public export at 'yaml/schema', providing easier-to-use stringifier options (#58)

Bugfixes

• Stop including end comments in collections if next content is not sufficiently indented (#41, #54)
• Stop folding more-indented lines at start of folded block scalars (#55)
• cst/PlainValue: Allow :, to start a plain value in flow-out (#56)
• Only advance to end of escape during double-quoted scalar folding (#57)

v1.0.3

• Stop splitting \ escapes in double-quoted strings across line endings (#48)
• Quote plain strings consisting of just - or ? (#52)