TSTypeAlias

Representation of an Interface in TypeScript.

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Inherits from

TSHasBlock, TypeAlias, TSSymbol, HasBlock, HasValue, Exportable, Symbol, Expression, Usable, Editable, Importable, HasName

Attributes

attributes

list[ TSAttribute ]

Retrieves all attributes belonging to this type alias.

code_block

TSCodeBlock

The code block associated with this type alias.

comment

TSCommentGroup | None

Retrieves the comment group associated with the symbol.

decorators

list[ TSDecorator ]

Returns a list of decorators associated with this symbol.

docstring

TSCommentGroup | None

Retrieves the docstring of a function or class.

export

TSExport | None

Returns the export object that exports this symbol.

exported_name

str | None

Retrieves the exported name of a symbol from its file.

extended

SymbolGroup

Returns a SymbolGroup of all extended nodes associated with this element.

extended_nodes

list[ Editable ]

Returns the list of nodes associated with this symbol including extended nodes.

extended_source

str

Returns the source text representation of all extended nodes.

file

TSFile

The file object that this Editable instance belongs to.

filepath

str

The file path of the file that this Editable instance belongs to.

full_name

str | None

Returns the full name of the object, including the namespace path.

function_calls

list[ FunctionCall ]

Returns all function calls within the code block and its decorators.

has_semicolon

bool

Checks whether the current symbol has a semicolon at the end.

inline_comment

TSCommentGroup | None

Property that retrieves the inline comment group associated with the symbol.

is_decorated

bool

Checks if the current symbol has a decorator.

is_exported

bool

Indicates if the symbol is exported from its defining file.

is_reexported

bool

Determines if the symbol is re-exported from a different file.

jsx_elements

list[ JSXElement [ TSTypeAlias ]]

Returns a list of all JSX elements contained within this symbol.

name

str | None

Retrieves the base name of the object without namespace prefixes.

parent

Editable

The parent node of this Editable instance.

parent_class

TSClass | None

Find the class this node is contained in

parent_function

TSFunction | None

Find the function this node is contained in

parent_statement

Statement | None

Find the statement this node is contained in

resolved_value

Expression | list[ Expression ]

Returns the resolved type of an Expression.

semicolon_node

Editable | None

Retrieves the semicolon node associated with a TypeScript symbol.

source

str

Returns the source code of the symbol.

symbol_type

The type of symbol, set to SymbolType.Type.

type_parameters

TypeParameters[ Type , TSTypeAlias ] | None

The type parameters of the symbol, if any.

value

Expression | None

Gets the value node of the object.

variable_usages

list[ Editable ]

Returns Editables for all TreeSitter node instances of variable usages within this node's

Methods

add_comment

Adds a new comment to the symbol.

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Parameters

comment

str

required

The comment text to be added.

auto_format

bool

default:True

Whether to automatically format the text into a comment style. Defaults to True.

clean_format

bool

default:True

Whether to clean the format of the comment before inserting. Defaults to True.

comment_type

TSCommentType

default:TSCommentType.DOUBLE_SLASH

Type of comment to add. Defaults to TSCommentType.DOUBLE_SLASH.

Returns

None

add_decorator

Adds a decorator to a function or method.

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Parameters

new_decorator

str

required

The decorator to add, including the '@' symbol.

skip_if_exists

bool, optional

default:False

If True, skips adding if the decorator exists.

Returns

bool

True if the decorator was added, False if skipped.

add_keyword

Insert a keyword in the appropriate place before this symbol if it doesn’t already exist.

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Parameters

keyword

str

required

The keyword to be inserted. Must be a valid keyword in the language context.

Returns

None

ancestors

Find all ancestors of the node of the given type. Does not return itself

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Returns

list[ Editable ]

dependencies

Returns a list of symbols that this symbol depends on.

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Parameters

usage_types

UsageType | None

default:UsageType.DIRECT

The types of dependencies to search for. Defaults to UsageType.DIRECT.

max_depth

int | None

default:None

Maximum depth to traverse in the dependency graph. If provided, will recursively collect

Returns

list[Union[ TSSymbol , TSImport ]]

A list of symbols and imports that this symbol depends on, sorted by file location.

edit

Replace the source of this node with new_src.

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Parameters

new_src

str

required

The new source code to replace the current source with.

fix_indentation

bool

default:False

If True, adjusts the indentation of new_src to match the current text's indentation. Defaults to False.

priority

int

default:0

The priority of this edit. Higher priority edits take precedence. Defaults to 0.

dedupe

bool

default:True

If True, prevents duplicate edits. Defaults to True.

Returns

None

find

Find and return matching nodes or substrings within an Editable instance.

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Parameters

strings_to_match

Union[list[str], str]

required

One or more strings to search for.

exact

bool

default:False

If True, only return nodes whose source exactly matches one of the strings_to_match.

Returns

list[ Editable ]

A list of Editable instances that match the search criteria.

find_string_literals

Returns a list of string literals within this node’s source that match any of the given

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Parameters

strings_to_match

list[str]

required

A list of strings to search for in string literals.

fuzzy_match

bool

default:False

If True, matches substrings within string literals. If False, only matches exact strings. Defaults to False.

Returns

list[ Editable [ TSTypeAlias ]]

A list of Editable objects representing the matching string literals.

flag

Flags a TypeScript symbol by adding a flag comment and returning a CodeFlag.

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Returns

CodeFlag[ TSTypeAlias ]

The code flag object for tracking purposes

get_attribute

Retrieves a specific attribute from a TypeScript type alias by its name.

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Parameters

name

str

required

The name of the attribute to retrieve.

Returns

TSAttribute | None

The attribute with the specified name if found, None otherwise.

get_component

Returns a specific JSX element from within this symbol’s JSX elements.

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Parameters

component_name

str

required

The name of the JSX component to find.

Returns

JSXElement [ TSTypeAlias ] | None

The matching JSX element if found, None otherwise.

get_import_string

Generates the appropriate import string for a symbol.

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Parameters

alias

str | None, optional

default:None

The alias to use for the imported symbol. Defaults to None.

module

str | None, optional

default:None

The module to import from. If None, uses the file's import module name.

import_type

ImportType , optional

default:ImportType.UNKNOWN

The type of import to generate (e.g., WILDCARD). Defaults to

is_type_import

bool, optional

default:False

Whether this is a type-only import. Defaults to False.

Returns

str

A formatted import statement string.

get_name

Returns the name node of the object.

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Returns

Name | TSChainedAttribute | None

The name node of the object. Can be a Name node for simple names, a ChainedAttribute for names with namespaces (e.g., a.b), or None if the object has no name.

get_variable_usages

Returns Editables for all TreeSitter nodes corresponding to instances of variable usage

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Parameters

var_name

str

required

The variable name to search for.

fuzzy_match

bool

default:False

If True, matches variables where var_name is a substring. If False, requires exact match. Defaults to False.

Returns

Sequence[ Editable [ TSTypeAlias ]]

List of Editable objects representing variable usage nodes matching the given name.

insert_after

Inserts code after this node.

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Parameters

new_src

str

required

The source code to insert after this node.

fix_indentation

bool, optional

default:False

Whether to adjust the indentation of new_src to match the current node. Defaults to False.

newline

bool, optional

default:True

Whether to add a newline before the new_src. Defaults to True.

priority

int, optional

default:0

Priority of the insertion transaction. Defaults to 0.

dedupe

bool, optional

default:True

Whether to deduplicate identical transactions. Defaults to True.

Returns

None

insert_before

Inserts text before the current symbol node in the Abstract Syntax Tree.

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Parameters

new_src

str

required

The source code text to insert.

fix_indentation

bool

default:False

Whether to adjust the indentation of new_src to match current text. Defaults to False.

newline

bool

default:True

Whether to add a newline after insertion. Defaults to True.

priority

int

default:0

Priority of this edit operation. Higher priority edits are applied first. Defaults to 0.

dedupe

bool

default:True

Whether to remove duplicate insertions. Defaults to True.

extended

bool

default:True

Whether to insert before extended nodes like comments and decorators. Defaults to True.

Returns

None

is_child_of

Checks if this node is a descendant of the given editable instance in the AST.

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Returns

bool

is_wrapped_in

Check if this node is contained another node of the given class

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Returns

bool

move_to_file

Moves the given symbol to a new file and updates its imports and references.

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Parameters

file

TSFile

required

The destination file to move the symbol to.

include_dependencies

bool

default:True

If True, moves all dependencies of the symbol to the new file. If False, adds imports for the dependencies. Defaults to True.

strategy

str

default:"update_all_imports"

The strategy to use for updating imports. Can be either 'add_back_edge' or 'update_all_imports'. Defaults to 'update_all_imports'.

Returns

None

parent_of_type

Find the first ancestor of the node of the given type. Does not return itself

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Returns

Editable | None

parent_of_types

Find the first ancestor of the node of the given type. Does not return itself

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Returns

Editable | None

reduce_condition

Reduces an editable to the following condition

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Returns

None

remove

Deletes this Node and its related extended nodes (e.g. decorators, comments).

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Parameters

delete_formatting

bool

default:True

Whether to delete surrounding whitespace and formatting. Defaults to True.

priority

int

default:0

Priority of the removal transaction. Higher priority transactions are executed first. Defaults to 0.

dedupe

bool

default:True

Whether to deduplicate removal transactions at the same location. Defaults to True.

Returns

None

rename

Renames a symbol and updates all its references in the codebase.

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Parameters

new_name

str

required

The new name for the symbol.

priority

int

default:0

Priority of the edit operation. Defaults to 0.

Returns

tuple[NodeId, NodeId]

A tuple containing the file node ID and the new node ID of the renamed symbol.

replace

Search and replace occurrences of text within this node’s source and its extended nodes.

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Parameters

old

str

required

The text or pattern to search for.

new

str

required

The text to replace matches with.

count

int, optional

default:-1

Maximum number of replacements to make. Defaults to -1 (replace all).

is_regex

bool, optional

default:False

Whether to treat 'old' as a regex pattern. Defaults to False.

priority

int, optional

default:0

Priority of the replacement operation. Defaults to 0.

Returns

int

The total number of replacements made.

search

Returns a list of all regex match of regex_pattern, similar to python’s re.search().

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Parameters

regex_pattern

str

required

The regular expression pattern to search for.

include_strings

bool

default:True

When False, excludes the contents of string literals from the search. Defaults to True.

include_comments

bool

default:True

When False, excludes the contents of comments from the search. Defaults to True.

Returns

list[ Editable ]

A list of Editable objects corresponding to the matches found.

set_comment

Sets a comment to the symbol.

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Parameters

comment

str

required

The comment text to be added.

auto_format

bool, optional

default:True

Whether to automatically format the text into a comment syntax.

clean_format

bool, optional

default:True

Whether to clean the format of the comment before inserting.

comment_type

TSCommentType , optional

default:TSCommentType.DOUBLE_SLASH

The style of comment to add.

Returns

None

set_docstring

Sets or updates a docstring for a code element.

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Parameters

docstring

str

required

The docstring text to be added or updated.

auto_format

bool, optional

default:True

Whether to automatically format the text into a docstring format. Defaults to True.

clean_format

bool, optional

default:True

Whether to clean existing formatting from the docstring before inserting. Defaults to True.

leading_star

bool, optional

default:True

Whether to add leading "*" to each line of the comment block. Defaults to True.

force_multiline

bool, optional

default:False

Whether to force single line comments to be multi-line. Defaults to False.

Returns

None

set_inline_comment

Sets an inline comment to the symbol.

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Parameters

comment

str

required

The inline comment text to be added.

auto_format

bool, optional

default:True

Whether to automatically format the text as a comment.

clean_format

bool, optional

default:True

Whether to clean the comment format before inserting.

node

TSNode | None, optional

default:None

The specific node to attach the comment to.

Returns

None

set_name

Sets the name of a code element.

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Parameters

name

str

required

The new name to set for the object.

Returns

None

set_value

Sets the value of the node’s value Expression.

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Parameters

value

str

required

The new value to set.

Returns

None

symbol_usages

Returns a list of symbols that use or import the exportable object.

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Parameters

usage_types

UsageType | None

default:None

The types of usages to search for. Defaults to any.

Returns

list[ TSImport | TSSymbol | TSExport ]

A list of symbols that use or import the exportable object.

usages

Returns a list of usages of the exportable object.

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Parameters

usage_types

UsageType | None

default:None

Specifies which types of usages to include in the results. Default is any usages.

Returns

list[ Usage ]

A sorted list of Usage objects representing where this exportable is used, ordered by source location in reverse.