Dynamic data source refresh with external stored power query m code

After some searching online, I found a way to get this resolved. 

Since #shared contains all functions, you can specify the individual functions used as a record in the environments part of the Expression.Evaluate function. 

For instance:

let convert = Expression.Evaluate(Text.FromBinary(
Web.Contents(
"https://raw.githubusercontent.com/...."
)
), [
#"Table.AddColumn" = Table.AddColumn,
#"Text.BetweenDelimiters" = Text.BetweenDelimiters,
#"Text.Replace" = Text.Replace,
#"Record.Field" = Record.Field,
#"Text.AfterDelimiter" = Text.AfterDelimiter,
#"RelativePosition.FromEnd" = RelativePosition.FromEnd,
#"Text.BeforeDelimiter" = Text.BeforeDelimiter

]

) in convert

This actually allows the refresh to work. 

Update: Functions, like Web.Contents, Web.BrowserContents, etc are not part of #shared. But in your case you should be able to just add 

[ Text.FromBinary = Text.FromBinary ]

 instead of #shared that might resolve your issue (in combination with the RelativePath and Query sections in Web.Contents). The only part of Web.Contents that must be static is the domain itself.