## 0.15.0 (2021-08-11)

### Breaking changes

The module's name changed from `lezer` to `@lezer/lr`.

The `Parser` class was renamed to `LRParser` (`Parser` is now the abstract class that all parsers extend).

Nested parsing is no longer handled inside the LR parser (instead, it is done by using `parseMixed` from the `@lezer/common` package as a wrapper).

External tokenizers are passed different arguments and get a different input stream abstraction (to make accidental uncontrolled lookahead and lookbehind, which were easy ways to break incremental parsing, harder).

Drops support for `Stack.startOf` (which is no longer useful without lookbehind).

Context trackers also get passed different arguments, following the changed input stream format.

This package no longer re-exports bindings from `@lezer/common`.

### Bug fixes

Slightly prefer deleting token to inserting them to avoid far-fetched parses.

Fix a problem where node reuse didn't take the amount of look-ahead done by the tokenizer into account, and could reuse nodes whose content would tokenize differently due to changes after them.

Track tokenizer lookahead to fix a problem where some incremental parses would produce incorrect results.

### New features

LR parsers now support a `wrapper` configuration option that allows you to inject additional logic by wrapping the `PartialParse` object it returns.

## ,### Breaking changes

The module's name changed from `lezer` to `@lezer/lr`.

The `Parser` class was renamed to `LRParser` (`Parser` is now the abstract class that all parsers extend).

Nested parsing is no longer handled inside the LR parser (instead, it is done by using `parseMixed` from the `@lezer/common` package as a wrapper).

External tokenizers are passed different arguments and get a different input stream abstraction (to make accidental uncontrolled lookahead and lookbehind, which were easy ways to break incremental parsing, harder).

Drops support for `Stack.startOf` (which is no longer useful without lookbehind).

Context trackers also get passed different arguments, following the changed input stream format.

This package no longer re-exports bindings from `@lezer/common`.

### Bug fixes

Slightly prefer deleting token to inserting them to avoid far-fetched parses.

Fix a problem where node reuse didn't take the amount of look-ahead done by the tokenizer into account, and could reuse nodes whose content would tokenize differently due to changes after them.

Track tokenizer lookahead to fix a problem where some incremental parses would produce incorrect results.

### New features

LR parsers now support a `wrapper` configuration option that allows you to inject additional logic by wrapping the `PartialParse` object it returns.