Function convertSingleImport

test/fixtures/snapshot/typescript.js:152419–152448

* Converts `const < > = require("x");`. * Returns nodes that will replace the variable declaration for the commonjs import. * May also make use `changes` to remove qualifiers at the use sites of imports, to change `mod.x` to `x`.

(name, moduleSpecifier, checker, identifiers, target, quotePreference)

         * May also make use `changes` to remove qualifiers at the use sites of imports, to change `mod.x` to `x`.
         */
        function convertSingleImport(name, moduleSpecifier, checker, identifiers, target, quotePreference) {
            switch (name.kind) {
                case 201 /* SyntaxKind.ObjectBindingPattern */: {
                    var importSpecifiers = ts.mapAllOrFail(name.elements, function (e) {
                        return e.dotDotDotToken || e.initializer || e.propertyName && !ts.isIdentifier(e.propertyName) || !ts.isIdentifier(e.name)
                            ? undefined
                            : makeImportSpecifier(e.propertyName && e.propertyName.text, e.name.text);
                    });
                    if (importSpecifiers) {
                        return convertedImports([ts.makeImport(/*name*/ undefined, importSpecifiers, moduleSpecifier, quotePreference)]);
                    }
                }
                // falls through -- object destructuring has an interesting pattern and must be a variable declaration
                case 202 /* SyntaxKind.ArrayBindingPattern */: {
                    /*
                    import x from "x";
                    const [a, b, c] = x;
                    */
                    var tmp = makeUniqueName(codefix.moduleSpecifierToValidIdentifier(moduleSpecifier.text, target), identifiers);
                    return convertedImports([
                        ts.makeImport(ts.factory.createIdentifier(tmp), /*namedImports*/ undefined, moduleSpecifier, quotePreference),
                        makeConst(/*modifiers*/ undefined, ts.getSynthesizedDeepClone(name), ts.factory.createIdentifier(tmp)),
                    ]);
                }
                case 79 /* SyntaxKind.Identifier */:
                    return convertSingleIdentifierImport(name, moduleSpecifier, checker, identifiers, quotePreference);
                default:
                    return ts.Debug.assertNever(name, "Convert to ES module got invalid name kind ".concat(name.kind));
            }
        }
        /**
         * Convert `import x = require("x").`
         * Also: