(type: ts.Type, typeChecker: ts.TypeChecker)
| 55 | } |
| 56 | |
| 57 | export function unwrapArrayItemType(type: ts.Type, typeChecker: ts.TypeChecker): ts.Type | null { |
| 58 | if (type.symbol && type.symbol.name === 'Array') { |
| 59 | return (type as ts.TypeReference).typeArguments![0]; |
| 60 | } |
| 61 | |
| 62 | if (isPrimitiveType(type)) { |
| 63 | return null; |
| 64 | } |
| 65 | |
| 66 | if (type.isUnion()) { |
| 67 | const nonNullable = typeChecker.getNonNullableType(type); |
| 68 | if (type === nonNullable) { |
| 69 | return null; |
| 70 | } |
| 71 | return unwrapArrayItemType(nonNullable, typeChecker); |
| 72 | } |
| 73 | |
| 74 | return null; |
| 75 | } |
| 76 | |
| 77 | export function isPrimitiveType(type: ts.Type | null) { |
| 78 | if (!type) { |
nothing calls this directly
no test coverage detected