content being set to '"undefined"' in rollup context

[gaberudy]

I'm sorry I don't have a small reproducable case, but when when using rollup with rollup-plugin-commonjs and importing graphql, there is some weird things going on this line:

magic-string/src/MagicString.js

Line 549 in c1c7930

if (chunk.edited && chunk.content.length) {

See the screenshot here:

rollup/rollup#1859 (comment)

Essentially, in some previous code magicstring set content to the string 'undefined' (maybe here?):

magic-string/src/MagicString.js

Line 222 in c1c7930

chunk.content = chunk.content.replace(pattern, replacer);

[gaberudy]

From extracting the context from the rollup code, there is a MagicString instance based on the original string:

import * as graphql from "/Users/grudy/dev/stable/jsapp/node_modules/graphql/index.mjs"; export default ( graphql && graphql['default'] ) || graphql;

and it is calling the member overwrite(117, 124, "graphql$1", {storeName: true, contentOnly: false });