What is the process for importing the Scale type definition from the Scale module?

Recently, I've been utilizing the Tonal package within a Vite/Vue/Typescript project.

My current task involves importing the type known as Scale from the Scale module.

You can find the type definition here:

export interface Scale extends ScaleType {
  tonic: string | null;
  type: string;
  notes: NoteName[];
}

When it comes to exporting the module itself, it is done in this manner:

export default {
  degrees,
  detect,
  extended,
  get,
  modeNames,
  names,
  rangeOf,
  reduced,
  scaleChords,
  scaleNotes,
  steps,
  tokenize,

  // deprecated
  scale,
};

And the import statement for the module is:

import { Scale } from "tonal";

Could you guide me on how to correctly import the type?

Attempts like the following have been unsuccessful:

import type { Scale } from 'tonal'
import type { Scale.Scale } from 'tonal'
import type { Scale } from 'tonal/packages/scale'

Answer №1

As per the guidelines outlined in the official documentation of the scale package within that specific project, you have the option to set up the @tonaljs/scale project and utilize imports from there.

This will enable you to access what is being exported from this particular file.

Essentially, the desired type can be found at:

import { Scale } from "@tonaljs/scale"

This method functions just as anticipated


To successfully access it for import, you must explicitly include @tonaljs/scale in your npm dependencies. However, in line with the dependencies mentioned within the tonal package, it is automatically installed for you. Specifying it as an explicit dependency notifies Typescript that importing directly from it is permitted.

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