Mark `dedent` function as side effect free

[hugo082]

Related to rollup limitation on PURE annotated tagged template literals: rollup/rollup#4035

I suggest to mark the dedent function as side effect free so the tree shaker can do is job as expected:

/* @__NO_SIDE_EFFECTS__ */
function dedent(text, ...values) {
  // ...
}

You can have a look at the following replication for details:

[aleclarson]

Radashi has "sideEffects": false in its package.json; shouldn't that be enough?

Rollup's node-resolve plugin apparently supports it: rollup/rollup#5987 (comment)

[hugo082]

It seems not, you can check here: https://stackblitz.com/edit/stackblitz-webcontainer-api-starter-gd2ycsli?file=README.md

The build output contains:

dedent`TO_IGNORE`;
const TO_INCLUDE = dedent`TO_INCLUDE`;
console.log(TO_INCLUDE);

[aleclarson]

PR welcome!

Scratch that. Easy enough to add myself 😄

edit: Hrmmm... it appears that tsup compiles it to a single line comment. Is that supported?

// @__NO_SIDE_EFFECTS__

[hugo082]

yes it works too 👍