Dataview implicit types (from the documentation: https://blacksmithgu.github.io/obsidian-dataview/annotation/metadata-pages/)

dataview-implicit-types.markdown

Field Name	Data Type	Description
file.name	Text	The file name as seen in Obsidians sidebar.
file.folder	Text	The path of the folder this file belongs to.
file.path	Text	The full file path, including the files name.
file.ext	Text	The extension of the file type; generally md.
file.link	Link	A link to the file.
file.size	Number	The size (in bytes) of the file.
file.ctime	Date with Time	The date that the file was created.
file.cday	Date	The date that the file was created.
file.mtime	Date with Time	The date that the file was last modified.
file.mday	Date	The date that the file was last modified.
file.tags	List	A list of all unique tags in the note. Subtags are broken down by each level, so #Tag/1/A will be stored in the list as [#Tag, #Tag/1, #Tag/1/A].
file.etags	List	A list of all explicit tags in the note; unlike file.tags, does not break subtags down, i.e. [#Tag/1/A]
file.inlinks	List	A list of all incoming links to this file, meaning all files that contain a link to this file.
file.outlinks	List	A list of all outgoing links from this file, meaning all links the file contains.
file.aliases	List	A list of all aliases for the note as defined via the YAML frontmatter.
file.tasks	List	A list of all tasks (I.e., |[ ] some task) in this file.
file.lists	List	A list of all list elements in the file (including tasks); these elements are effectively tasks and can be rendered in task views.
file.frontmatter	List	Contains the raw values of all frontmatter in form of key |value text values; mainly useful for checking raw frontmatter values or for dynamically listing frontmatter keys.
file.day	Date	Only available if the file has a date inside its file name (of form yyyy-mm-dd or yyyymmdd), or has a Date field/inline field.
file.starred	Boolean	if this file has been starred via the Obsidian Core Plugin "Starred Files".