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The error message "ts(2590) - Expression creates a union type that is too intricate to display" indicates that the union type of the expression is too complex for the TypeScript compiler to display. This error commonly occurs when a union type contains a large number of possible types, or when the types themselves are complex.
To resolve this error, you can try simplifying your union type by breaking it down into smaller, more manageable types. You can also consider using type aliases or interfaces to define your complex types in a more modular way.
Another approach is to use the "as" keyword to explicitly cast your expression to a simpler type. For example:
let myVar: string | number | boolean | {key: string}[] = /* expression */;
// Cast myVar to a simpler type
let simplerVar = myVar as string | number;
// Use simplerVar instead of myVar
console.log(simplerVar);
Finally, you can also try updating your TypeScript version to the latest version, as newer versions may have improved support for complex union types.