Returns the automation token the CLI authenticates with, from the first of these variables that is set:
SHOPIFY_SERVICE_ACCOUNT_TOKEN, or the deprecated SHOPIFY_APP_AUTOMATION_TOKEN and SHOPIFY_CLI_PARTNERS_TOKEN.
Returns undefined when the variables can't be used (an empty value, or the service account variable set alongside
another one). Callers then fall back to the login flow, which reports the problem instead of logging in.
Returns string|undefined
The automation token, or undefined if there is no usable one.
Returns the automation token the CLI authenticates with, from the first of these variables that is set: SHOPIFY_SERVICE_ACCOUNT_TOKEN, or the deprecated SHOPIFY_APP_AUTOMATION_TOKEN and SHOPIFY_CLI_PARTNERS_TOKEN.
Returns undefined when the variables can't be used (an empty value, or the service account variable set alongside another one). Callers then fall back to the login flow, which reports the problem instead of logging in.