26 curated breaking changes across major versions of json5. Use this as a migration checklist before bumping dependencies.
Fix: `package.json5` has been restored, and it is automatically generated and committed when the version is bumped. A new `build-package` NPM script has been added to facilitate this.
Fix: The warning has been made clearer when line and paragraph separators are used in strings.
New: Support for Unicode 10 has been added.
New: The test framework has been migrated from Mocha to Tap.
New: The browser build at `dist/index.js` is no longer minified by default. A minified version is available at `dist/index.min.js`. (#181)
New: Unicode property names and Unicode escapes in property names are supported. (#1)
New: JSON5 allows line and paragraph separator characters (U+2028 and U+2029) in strings in order to be compatible with JSON. However, ES5 does not allow these characters in strings, so JSON5 gives a warning when they are parsed and escapes them when they are stringified. (#70)
New: `stringify` outputs trailing commas in objects and arrays when a `space` option is provided. (#66)
New: The CLI supports STDIN and STDOUT and adds `--out-file`, `--space`, and `--validate` options. See `json5 --help` for more information. (#72, #84, and #108)
New: `stringify` accepts an options object as its second argument. The supported options are `replacer`, `space`, and a new `quote` option that specifies the quote character used in strings. (#71)
Fix: YUI Compressor no longer fails when compressing json5.js. ([#97](https://github.com/aseemk/json5/pull/97))
New: `parse` and the CLI provide line and column numbers when displaying error messages. ([#101](https://github.com/aseemk/json5/pull/101); awesome work by [@amb26](https://github.com/amb26).)
**Breaking:** Negative hexadecimal numbers (e.g. `-0xC8`) are rejected now.
New: Trailing decimal points in decimal numbers are allowed again.
New: `Infinity` and `-Infinity` are now allowed number literals.
New: Plus signs (`+`) in front of numbers are now allowed, since it can
Fix: unescaped newlines in strings are rejected now.
New: Add Node.js `json5` executable to compile JSON5 files to JSON.
New: Add Node.js `require()` hook. Register via `json5/lib/require`.
Fix: Throw proper `SyntaxError` instances on errors now.
**Breaking:** Reject omitted elements in arrays now. These are disallowed by
**Breaking:** Reject trailing decimal points in decimal numbers now. These
New: Support leading decimal points in decimal numbers.
**Breaking:** Reject "noctal" numbers now (base-10 numbers that begin with a
Fix: Reject octal numbers properly now. Previously, they were accepted but
New: Support hexadecimal numbers. (Thanks [@MaxNanasy].)
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