packages/babel-generator/src/generators/modules.js
import * as t from "@babel/types";
export function ImportSpecifier(node: Object) {
if (node.importKind === "type" || node.importKind === "typeof") {
this.word(node.importKind);
this.space();
}
this.print(node.imported, node);
if (node.local && node.local.name !== node.imported.name) {
this.space();
this.word("as");
this.space();
this.print(node.local, node);
}
}
export function ImportDefaultSpecifier(node: Object) {
this.print(node.local, node);
}
export function ExportDefaultSpecifier(node: Object) {
this.print(node.exported, node);
}
export function ExportSpecifier(node: Object) {
this.print(node.local, node);
if (node.exported && node.local.name !== node.exported.name) {
this.space();
this.word("as");
this.space();
this.print(node.exported, node);
}
}
export function ExportNamespaceSpecifier(node: Object) {
this.token("*");
this.space();
this.word("as");
this.space();
this.print(node.exported, node);
}
export function ExportAllDeclaration(node: Object) {
this.word("export");
this.space();
if (node.exportKind === "type") {
this.word("type");
this.space();
}
this.token("*");
this.space();
this.word("from");
this.space();
this.print(node.source, node);
this.semicolon();
}
export function ExportNamedDeclaration(node: Object) {
if (
this.format.decoratorsBeforeExport &&
t.isClassDeclaration(node.declaration)
) {
this.printJoin(node.declaration.decorators, node);
}
this.word("export");
this.space();
ExportDeclaration.apply(this, arguments);
}
export function ExportDefaultDeclaration(node: Object) {
if (
this.format.decoratorsBeforeExport &&
t.isClassDeclaration(node.declaration)
) {
this.printJoin(node.declaration.decorators, node);
}
this.word("export");
this.space();
this.word("default");
this.space();
ExportDeclaration.apply(this, arguments);
}
function ExportDeclaration(node: Object) {
if (node.declaration) {
const declar = node.declaration;
this.print(declar, node);
if (!t.isStatement(declar)) this.semicolon();
} else {
if (node.exportKind === "type") {
this.word("type");
this.space();
}
const specifiers = node.specifiers.slice(0);
// print "special" specifiers first
let hasSpecial = false;
for (;;) {
const first = specifiers[0];
if (
t.isExportDefaultSpecifier(first) ||
t.isExportNamespaceSpecifier(first)
) {
hasSpecial = true;
this.print(specifiers.shift(), node);
if (specifiers.length) {
this.token(",");
this.space();
}
} else {
break;
}
}
if (specifiers.length || (!specifiers.length && !hasSpecial)) {
this.token("{");
if (specifiers.length) {
this.space();
this.printList(specifiers, node);
this.space();
}
this.token("}");
}
if (node.source) {
this.space();
this.word("from");
this.space();
this.print(node.source, node);
}
this.semicolon();
}
}
export function ImportDeclaration(node: Object) {
this.word("import");
this.space();
if (node.importKind === "type" || node.importKind === "typeof") {
this.word(node.importKind);
this.space();
}
const specifiers = node.specifiers.slice(0);
if (specifiers?.length) {
// print "special" specifiers first
for (;;) {
const first = specifiers[0];
if (
t.isImportDefaultSpecifier(first) ||
t.isImportNamespaceSpecifier(first)
) {
this.print(specifiers.shift(), node);
if (specifiers.length) {
this.token(",");
this.space();
}
} else {
break;
}
}
if (specifiers.length) {
this.token("{");
this.space();
this.printList(specifiers, node);
this.space();
this.token("}");
}
this.space();
this.word("from");
this.space();
}
this.print(node.source, node);
if (node.attributes?.length) {
this.space();
this.word("with");
this.space();
this.printList(node.attributes, node);
}
this.semicolon();
}
export function ImportAttribute(node: Object) {
this.print(node.key);
this.token(":");
this.space();
this.print(node.value);
}
export function ImportNamespaceSpecifier(node: Object) {
this.token("*");
this.space();
this.word("as");
this.space();
this.print(node.local, node);
}