Модуль:languages/canonical names/doc
This is the documentation page for Модуль:languages/canonical names
This module exports a table that converts the canonical name of a language to the corresponding code:
local lang_name = mw.loadData("Module:languages/canonical names")["English"] --> "en"
It covers languages in the data submodules of Module:languages, not etymology languages (Module:etymology languages/data), language families (Module:families), or scripts (Module:scripts/data).
If JavaScript is enabled, you can update the module by pressing the button at the top of the documentation page.
See also Module:languages/code to canonical name.