@observablehq/plot prototypes are missing a method due to skipped side effects

[mootari]

Failing module

• GitHub: https://github.com/observablehq/plot
• npm: https://www.npmjs.com/package/@observablehq/plot

Error

Classes in the bundle served by esm.sh are missing a method because a module import side effect isn't applied.

Correct JSDelivr ESM import:

(await import("https://cdn.jsdelivr.net/npm/@observablehq/plot@0.6.13/+esm")).Mark.prototype.plot

esm.sh import with missing method:

(await import("https://esm.sh/@observablehq/plot@0.6.13")).Mark.prototype.plot

The library mutates the prototype as a side effect in one of its core modules:
https://github.com/observablehq/plot/blob/28c7ebc55a4fd78b4ef264f658ce9109c7c94eaa/src/plot.js#L375

Additional info

• esm.sh version: v135
• Browser version: n/a - tested with targets es2015, es2022, esnext