What could be causing the computed property in Vue 2 component to not return the expected state?

I'm encountering an issue with my Vue component where it fails to load due to one of its computed properties being undefined:

Error: Cannot read properties of undefined (reading 'map')

Here is the snippet of the computed property causing the problem:

artifacts() {
  let projectArtifacts;
  if (typeof this.currentProject !== 'undefined') {
    const { artifacts } = this.currentProject.settings.artifacts;
    projectArtifacts = Object.keys(artifacts).map((name) => ({
      value: name,
      labelText: this.convertValueToLabel(name),
    }));
  } else {
    projectArtifacts = this.MIQAConfig.artifact_options.map((name) => ({
      value: name,
      labelText: this.convertValueToLabel(name),
    }));
  }
  return projectArtifacts;
},

Upon inspecting Vue's DevTools, I can see that the array I need is present in Vuex store:

state
 currentProject: Object
  settings: Object
   artifacts: Object
     Test One: -1
     Test Two: -1

In addition, within computed:, I have:

...mapState([
  'currentProject',
]),

What could be the mistake I am making in this scenario?

Answer №1

The issue arises from a mistake in object destructuring.

This error assumes that the artifacts object contains another nested artifacts object within it.

const { artifacts } = this.currentProject.settings.artifacts;

To correct this, you can use:

const { artifacts } = this.currentProject.settings;
// or
const artifacts = this.currentProject.settings.artifacts;

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