Extend table in Neovim Lua

Use vim.tbl_extend(behavior, ...).

Takes in at least 3 arguments:

• behavior, one of error, keep, or force.
• ..., at minimum two tables

These define what happens if a key is found in both tables:

• error, stop and error
• keep, use the value from the left table
• force, use the value from the right table

Not a function available in base Lua.

local fruit_prices = { "apple" = 2, "banana" = 3 }
local vegetable_prices = { "potato" = 2, "broccoli" = 4 }

-- { "apple" = 2, "banana" = 3, "potato" = 2, "broccoli" = 4  }
local produce_prices = vim.tbl_extend("error", fruit_prices, vegetable_prices)

See the Neovim documentation for more info