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Updated answer to make it more generic

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You need to update your sfdx-lwc-jest node dependency to a more recent version:

Edit package.json
Update the version of sfdx-lwc-jest under devDependencies. FYI: 0.7.0 is with the latest for api v48.0 at timeproper version of writing.'sfdx-lwc-jest' according to your current Salesforce version from here in versions tab
Run npm install or yarn install depending on your Node package manager.

You need to update your sfdx-lwc-jest node dependency to a more recent version:

Edit package.json
Update the version of sfdx-lwc-jest under devDependencies. FYI: 0.7.0 is the latest for api v48.0 at time of writing.
Run npm install or yarn install depending on your Node package manager.

You need to update your sfdx-lwc-jest node dependency to a more recent version:

Edit package.json
Update the version of sfdx-lwc-jest under devDependencies with the proper version of 'sfdx-lwc-jest' according to your current Salesforce version from here in versions tab
Run npm install or yarn install depending on your Node package manager.

Source Link

created Mar 2, 2020 at 13:21

You need to update your sfdx-lwc-jest node dependency to a more recent version:

Edit package.json
Update the version of sfdx-lwc-jest under devDependencies. FYI: 0.7.0 is the latest for api v48.0 at time of writing.
Run npm install or yarn install depending on your Node package manager.