"Invalid |.u syntax" when mixing pipe styles

[TheSpyder]

Thank you for filing! Check list:

• Is it a bug? Usage questions should often be asked in the forum instead.
• Concise, focused, friendly issue title & description.
• A minimal, reproducible example.
• OS and browser versions, if relevant. not browser specific
• Is it already fixed in master? Instructions no

I'm converting a library to ReScript, and I accidentally saved my file with this weird mix of pipes:

let array = (encoder) => (a) => a|>Array.map(encoder)->Js.Json.array

This compile failed with invalid |.u syntax.

I'm not sure if I should expect the code to compile, but I do expect the compiler to give me a more reasonable error message. Playground example:
https://rescript-lang.org/try?version=v11.0.1&code=C4TwDgpgBMA8DkBDAfFAvFJ7UCkDOAdPgPYB2BwAUJQDYTBSIBOTiIAXFABRxKpqo4zViAQpkASnTcIpAMbEAJhCZSB3RGtSIAPsgCCLNgQC2iMF1kLlqgLTJ8RPGQLC2QA

[cristianoc]

This has to do with the compiler's ppx which transforms |> and ->.
The priority is unclear, since |> will go away (and is now reformatted away), but it is a bug.

[cknitt]

|> was fully removed in #7512