Features

• Diagnostics — syntax errors, reported per keystroke against a recovering parser
• Document symbols — every target declared in a BUILD file
• Workspace symbols — every target in the workspace
• Go-to-definition — labels and load() paths
• References — every label referring to a target, cross-file
• Document highlight — occurrences of the target under the cursor
• Rename — rename a target and rewrite every referring label
• Hover — the resolved target behind the label under the cursor
• Formatting — delegated to buildifier where it is installed
• Completion — labels, rule names, attributes
• Unresolved-label diagnostics — labels that name no target

Diagnostics

Parsing never bails on the first error, so a file being edited still produces a tree and still produces symbols. A truncated argument list is reported where it was truncated and does not swallow the rest of the file.

Symbols

Only BUILD files declare targets. MODULE.bazel is full of top-level calls carrying a name — bazel_dep(name = "rules_shell") — and reporting those as targets would invent labels that resolve to nothing.

Targets declared by legacy macros are named at evaluation time, so no parser can see them. The index reports that it is undercounting rather than presenting a partial list as complete.

Formatting

Formatting delegates to buildifier, because the only correct way to format a BUILD file is to agree with buildifier byte for byte. The capability is advertised whether or not buildifier is installed: one withdrawn at startup is one the user cannot get back by installing the tool.