ce4c83ff
 wxy
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"use strict";
var t = require("@babel/types");
var convertComments = require("./convertComments");
module.exports = function(ast, traverse, code) {
var state = { source: code };
// Monkey patch visitor keys in order to be able to traverse the estree nodes
t.VISITOR_KEYS.Property = t.VISITOR_KEYS.ObjectProperty;
t.VISITOR_KEYS.MethodDefinition = [
"key",
"value",
"decorators",
"returnType",
"typeParameters",
];
traverse(ast, astTransformVisitor, null, state);
delete t.VISITOR_KEYS.Property;
delete t.VISITOR_KEYS.MethodDefinition;
};
var astTransformVisitor = {
noScope: true,
enter(path) {
var node = path.node;
// private var to track original node type
node._babelType = node.type;
if (node.innerComments) {
node.trailingComments = node.innerComments;
delete node.innerComments;
}
if (node.trailingComments) {
convertComments(node.trailingComments);
}
if (node.leadingComments) {
convertComments(node.leadingComments);
}
},
exit(path) {
var node = path.node;
if (path.isJSXText()) {
node.type = "Literal";
}
if (
path.isRestElement() &&
path.parent &&
path.parent.type === "ObjectPattern"
) {
node.type = "ExperimentalRestProperty";
}
if (
path.isSpreadElement() &&
path.parent &&
path.parent.type === "ObjectExpression"
) {
node.type = "ExperimentalSpreadProperty";
}
if (path.isTypeParameter()) {
node.type = "Identifier";
node.typeAnnotation = node.bound;
delete node.bound;
}
// flow: prevent "no-undef"
// for "Component" in: "let x: React.Component"
if (path.isQualifiedTypeIdentifier()) {
delete node.id;
}
// for "b" in: "var a: { b: Foo }"
if (path.isObjectTypeProperty()) {
delete node.key;
}
// for "indexer" in: "var a: {[indexer: string]: number}"
if (path.isObjectTypeIndexer()) {
delete node.id;
}
// for "param" in: "var a: { func(param: Foo): Bar };"
if (path.isFunctionTypeParam()) {
delete node.name;
}
// modules
if (path.isImportDeclaration()) {
delete node.isType;
}
// template string range fixes
if (path.isTemplateLiteral()) {
for (var j = 0; j < node.quasis.length; j++) {
var q = node.quasis[j];
q.range[0] -= 1;
if (q.tail) {
q.range[1] += 1;
} else {
q.range[1] += 2;
}
q.loc.start.column -= 1;
if (q.tail) {
q.loc.end.column += 1;
} else {
q.loc.end.column += 2;
}
}
}
},
};
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