1.5.4 (2025-09-18)#

Bug fixes#

Support this parameters in function types.

1.5.3 (2025-09-09)#

Bug fixes#

Fix missing highlight tag for defer contextual keyword.

1.5.2 (2025-09-04)#

Bug fixes#

Allow const casts with old angle-bracket cast syntax.

Add support for import defer syntax.

1.5.1 (2025-04-18)#

Bug fixes#

Properly highlight satisfies as a keyword.

1.5.0 (2025-04-17)#

Bug fixes#

Support in/out modifiers on TypeScript type parameters.

New features#

Support the TypeScript satisfies operator.

1.4.21 (2024-12-03)#

Bug fixes#

Add support for const modifiers on TypeScript type parameters.

Allow TypeScript syntax, where the condition is just a variable.

Fix a bug where some TypeScript < tokens didn't appear in the syntax tree.

1.4.20 (2024-12-02)#

Bug fixes#

Use the className style tag for variable names used as constructors with new.

Add support for asserts syntax in function return types.

1.4.19 (2024-10-08)#

Bug fixes#

Support question marks after method names in TypeScript object type notation.

Support bracketed property names in TypeScript object types.

Allow TypeScript interface declarations to extend multiple types.

1.4.18 (2024-09-17)#

Bug fixes#

Support as syntax in mapped object types.

Make sure the parser doesn't get confused when a template interpolation is missing its expression.

1.4.17 (2024-06-11)#

Bug fixes#

Add support for {-readonly [K in T]-?: U} TypeScript syntax.

1.4.16 (2024-05-04)#

Bug fixes#

Don't consume ?. tokens when followed by a digit.

Support type arguments on non-call expressions.

1.4.15 (2024-04-23)#

Bug fixes#

Add support for new.target syntax.

1.4.14 (2024-03-30)#

Bug fixes#

Recognize the d and v RegExp flags. Support destructured parameters in function types

Allow destructured parameters in function signature types.

1.4.13 (2024-01-16)#

Bug fixes#

Fix inverted relative precedence of &, |, and ^ bitwise operators.

Add an explicit dependency on @lezer/common ^1.2.0.

1.4.12 (2024-01-04)#

Bug fixes#

Mark strings, comments, and interpolations as isolating for bidirectional text.

1.4.11 (2023-12-18)#

Bug fixes#

In TSX mode, parse <T,> or <T extends U> as type parameters, not JSX tags.

1.4.10 (2023-12-06)#

Bug fixes#

Support | and & as prefixes in TypeScript types.

1.4.9 (2023-10-30)#

Bug fixes#

Allow default to be used in import/export binding sets.

1.4.8 (2023-10-05)#

Bug fixes#

Properly highlight using as a keyword.

1.4.7 (2023-08-23)#

Bug fixes#

Properly parse hashbang comments.

1.4.6 (2023-08-22)#

Bug fixes#

Make sure that, in TypeScript, type argument lists are prefered over comparison operators when both produce valid parses.

1.4.5 (2023-07-25)#

Bug fixes#

Allow the index in a TypeScript indexed type to be any kind of type.

1.4.4 (2023-07-03)#

Bug fixes#

Add support for using syntax.

Make the package work with new TS resolution styles.

1.4.3 (2023-04-24)#

Bug fixes#

Properly parse this: Type within parameter lists for TypeScript.

1.4.2 (2023-03-29)#

Bug fixes#

Properly parse declare in front of class properties and methods in TypeScript.

1.4.1 (2023-01-09)#

Bug fixes#

Fix a bug where something like yield [1] (or await) was parsed as a member expression.

Add support for yield* syntax.

Escapes in strings are now parsed as their own tokens (and styled with the escape tag).

1.4.0 (2022-12-19)#

New features#

The new "SingleClassItem" top-level rule can be used to parse only a class item (method, property, or static block).

1.3.2 (2022-12-14)#

Bug fixes#

Typescript allows override on all class elements, not just methods.

Allow expressions in class extends clauses in TypeScript.

1.3.1 (2022-11-29)#

Bug fixes#

Actually emit a tree node for the @ characters in decorators.

1.3.0 (2022-11-28)#

New features#

Add support for decorator syntax.

1.2.0 (2022-11-24)#

New features#

The grammar now supports top: "SingleExpression" to parse an expression rather than a script.

1.1.1 (2022-11-19)#

Bug fixes#

Fix parsing of computed properties in class declarations.

1.1.0 (2022-11-17)#

Bug fixes#

Fix parsing of 'null' as type in TypeScript.

Allow computed properties in object destructuring patterns.

Add TypeScript 4.9's satisfies operator.

Support accessor syntax on class properties.

New features#

Add support for optional call syntax.

Distinguish lower-case JSX element names syntactically, give them a standard(tagName) highlight tag.

1.0.2 (2022-07-21)#

Bug fixes#

Properly assign a highlighting tag to the super keyword.

1.0.1 (2022-06-27)#

Bug fixes#

Fix parsing of TypeScript conditional types.

Support type parameters in TypeScript function type syntax.

1.0.0 (2022-06-06)#

New features#

First stable version.

0.16.0 (2022-04-20)#

Breaking changes#

Move to 0.16 serialized parser format.

Bug fixes#

Allow commas as separators in TypeScript object type syntax.

New features#

Add CatchClause and FinallyClause nodes wrapping parts of TryStatement.

The parser now includes syntax highlighting information in its node types.

0.15.3 (2022-01-26)#

Bug fixes#

Support missing values in array pattern syntax.

Support quoted module export names.

New features#

Template string interpolations now get their own nodes in the syntax tree.

0.15.2 (2021-12-08)#

Bug fixes#

Fix a typo in the TaggedTemplateExpression node name. Support n suffixes after non-decimal integers

Add support for non-decimal bignum literals ().

Add support for static class initialization blocks.

0.15.1 (2021-11-12)#

Bug fixes#

Add support for TypeScript import {type X} from y syntax.

Indexed TypeScript types can now take type parameters.

Add support for private field syntax.

Rename PropertyNameDefinition node to PropertyDefinition for consistency with other names.

New features#

Recognize TypeScript 4.3's override keyword.

0.15.0 (2021-08-11)#

Breaking changes#

The module's name changed from lezer-javascript to @lezer/javascript.

Upgrade to the 0.15.0 lezer interfaces.

0.13.4 (2021-04-30)#

Bug fixes#

Fixes a bug where arrow functions with expression bodies would include commas after the expression.

0.13.3 (2021-02-15)#

Bug fixes#

Wrap escaped JSX attribute values in a JSXEscape node.

0.13.2 (2021-01-18)#

Bug fixes#

Fix parsing of async function expressions.

0.13.1 (2020-12-04)#

Bug fixes#

Fix versions of lezer packages depended on.

0.13.0 (2020-12-04)#

0.12.0 (2020-10-23)#

Breaking changes#

Adjust to changed serialized parser format.

0.11.1 (2020-09-26)#

Bug fixes#

Fix lezer depencency versions

0.11.0 (2020-09-26)#

Breaking changes#

Follow change in serialized parser format.

0.10.1 (2020-09-02)#

Bug fixes#

Fix associativity of else and ternary operators.

Work around accidental ambiguity of TypeScript method and constructor signatures.

Properly parse ??= as an update operator.

0.10.0 (2020-08-07)#

Breaking changes#

Upgrade to 0.10 parser serialization

New features#

The gammar now supports TypeScript (use the "ts" dialect).

The grammar can now parse JSX syntax (use the "jsx" dialect).

0.9.1 (2020-06-29)#

Bug fixes#

Fix accidental use of non-ES5 library methods.

0.9.0 (2020-06-08)#

Breaking changes#

Upgrade to 0.9 parser serialization

0.8.4 (2020-05-30)#

Bug fixes#

Fix the package.json main field pointing at the wrong file, breaking the library in node versions older than 13.

0.8.3 (2020-04-09)#

Bug fixes#

Regenerate parser with a fix in lezer-generator so that the top node prop is properly assigned.

0.8.2 (2020-04-01)#

Bug fixes#

Make the package load as an ES module on node

0.8.1 (2020-02-28)#

New features#

Provide an ES module file.

0.8.0 (2020-02-03)#

Bug fixes#

Add support for the spread ... operator in array literals.

New features#

Follow 0.8.0 release of the library.

Add support for nullish coalescing and optional chaining.

0.7.0 (2020-01-20)#

Breaking changes#

Use the lezer 0.7.0 parser format.

0.5.2 (2020-01-15)#

Bug fixes#

Regenerate with lezer-generator 0.5.2 to avoid cyclic forced reductions.

0.5.1 (2019-10-22)#

Bug fixes#

Fix top prop missing from build output.

0.5.0 (2019-10-22)#

Breaking changes#

Move from lang to top prop on document node.

0.4.0 (2019-09-10)#

Breaking changes#

Adjust to 0.4.0 parse table format.

0.3.0 (2019-08-22)#

New features#

Go back to node names, add props, follow changes in grammar syntax.

0.2.0 (2019-08-02)#

New features#

Use tags rather than names.

0.1.0 (2019-07-09)#

New Features#

First documented release.