NewYour coding agent can read the release notes before it upgrades.Set up the MCP server →
npm · #325 most downloaded on npm
ECMAScript parsing infrastructure for multipurpose analysis
Last release 8 years ago
no release in 18 months
Release timing varies
gaps range from 1 weeks to 13 months
Most releases are documented
notes for 32 of 46 stable releases
Nothing withdrawn
no release was ever pulled
15 years old
46 releases · first in 2011
Fix parsing async get/set in a class (issue 1861, 1875)
Support ES2017 async function and await expression (issue 1079)
in expression in a concise body with a function body (issue 1793)
* Setter function argument must not be a rest parameter (issue 1693)
* Limit strict mode directive to functions with a simple parameter list (issue 1677)
* Prohibit any escape sequence in a reserved word (issue 1612)
* Only permit hex digits in hex escape sequence (issue 1619)
* Prohibit labelled class/generator/function declaration (issue 1484)
* Limit function declaration as if statement clause only in non-strict mode (issue 1657)
* Tolerate missing ) in a with and do-while statement (issue 1481)One column per quarter.
Support binding patterns as rest element (issue 1681)
Ensure that import specifier is more restrictive (issue 1615)
Fix assignment expression problem in an export declaration (issue 1596)
Do not implicitly collect comments when comment attachment is specified (issue 1553)
Support ES2016 exponentiation expression (issue 1490)
Fix tokenizer confusion with a comment (issue 1493, 1516)
Fix out-of-bound error location in an invalid string literal (issue 1457)
Do not allow trailing comma in a variable declaration (issue 1360)
let in non-strict mode (issue 1376)
* Fix missing delegate property in YieldExpression (issue 1407)Fix the handling of semicolon in a break statement (issue 1044)
let as an identifier in non-strict mode (issue 1289)
* Attach orphaned comments as innerComments (issue 1328)
* Add the support for token delegator (issue 1332)Properly allow or prohibit let in a binding identifier/pattern (issue 1048, 1098)
let in a binding identifier/pattern (issue 1048, 1098)
* Add sourceType field for Program node (issue 1159)
* Ensure that strict mode reserved word binding throw an error (issue 1171)
* Run the test suite with Node.js and IE 11 on Windows (issue 1294)
* Allow binding pattern with no initializer in a for statement (issue 1301)Run the test suite in a browser environment (issue 1004)
yield as a keyword vs an identifier (issue 1186)
* Support ES6 meta property new.target (issue 1203)
* Fix the syntax node for yield with expression (issue 1223)
* Fix the check of duplicated proto in property names (issue 1225)
* Fix ES6 Unicode escape in identifier name (issue 1229)
* Support ES6 IdentifierStart and IdentifierPart (issue 1232)
* Treat await as a reserved word when parsing as a module (issue 1234)
* Recognize identifier characters from Unicode SMP (issue 1244)
* Ensure that export and import can be followed by a comma (issue 1250)
* Fix yield operator precedence (issue 1262)Fix some cases of comment attachment (issue 1071, 1175)
Support ES6 for-of iteration (issue 1047)
Support ES6 generator (issue 1033)
u flag (issue 1179)Support ES6 import and export declarations (issue 1000)
super in ES6 class (issue 1147)Support ES6 rest parameter (issue 1011)
Support ES6 arrow function (issue 517)
Fix scanning of implicit octal literals (issue 565)
Fix parsing of LeftHandSideExpression in ForInStatement (issue 560)
Fix division by this (issue 616)
Fix duplicated tokens when collecting comments (issue 537)
Ensure that Program node may still have leading comments (issue 536)
Fix semicolon handling for expression statement (issue 462, 533)
Fix token handling of forward slash after an array literal (issue 512)
Optionally attach comments to the owning syntax nodes (issue 197)
Minimize the payload for packages (issue 362)
Variable declaration needs at least one declarator (issue 391)
Fix esvalidate JUnit output upon a syntax error (issue 374)
Improvement:
* Fix esvalidate JUnit output upon a syntax error (issue 374)
esvalidate understands shebang in a Unix shell script (issue 361)
Improvements:
* esvalidate understands shebang in a Unix shell script (issue 361)
* esvalidate treats fatal parsing failure as an error (issue 361)
* Reduce Node.js package via .npmignore (issue 362)
Initial release.
Initial release.
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Your coding agent can read these notes before it upgrades. Set up the MCP server →