3.9.1-rc regression: Unable to specify `rawText` when programmatically creating tagged template literals

[petebacondarwin]

TypeScript Version: 3.9.1-rc
Search Terms: tagged template literal rawText raw ES5

Code

The problem occurs when synthesising tagged template literals programmatically, and then trying to render them in ES5.

The API provides a method for specifying the "raw" parts of the template:

const template = ts.createNoSubstitutionTemplateLiteral('text', 'text');

But due to this regression this raw value is no longer being used.
An empty string is there, instead.

Here is a link to a reproduction: https://github.com/petebacondarwin/ts-3.9-rawtext-bug

Expected behavior:

$localize(__makeTemplateObject(["text"], ["text"]));

Actual behavior:

$localize(__makeTemplateObject(["text"], [""]));

Playground Link:
It is not possible to provide a Playground link because it only occurs when programmatically creating a tagged template literal AST node.

See the reproduction at https://github.com/petebacondarwin/ts-3.9-rawtext-bug

Related Issues:

This is a regression due to this commit: 70399e1#r39098346

[IgorMinar]

Hi ya'all!

This issue is currently blocking Angular from upgrading our ecosystem to TS3.9. We are exploring a workaround in case you can't fix this quickly, but we'd prefer a proper fix upstream.

Thank you!

[DanielRosenwasser]

Gotcha. We're planning a patch release later this month. If we could get something in the nightly and have something published at latest in ~2 weeks' time, would that be acceptable?

[IgorMinar]

That would work if that's the best you can do. We are working towards cutting Angular v10-rc.0 next Wednesday, so we'll keep on pursuing our workaround for rc.0. Thanks!