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Breaking: Update JSX tagName conversion for TS 2 (refs #105) #108

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Oct 29, 2016
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64 changes: 52 additions & 12 deletions lib/ast-converter.js
Original file line number Diff line number Diff line change
Expand Up @@ -244,6 +244,34 @@ function fixExports(node, result, ast) {
return result;
}

/**
* Returns true if a given TSNode is a JSX token
* @param {TSNode} node TSNode to be checked
* @returns {boolean} is a JSX token
*/
function isJSXToken(node) {
return (
node.kind >= SyntaxKind.JsxElement
&& node.kind <= SyntaxKind.JsxAttribute
);
}

/**
* Returns true if a given TSNode has a JSX token within its hierarchy
* @param {TSNode} node TSNode to be checked
* @returns {boolean} has JSX ancestor
*/
function hasJSXAncestor(node) {
while (node) {
if (isJSXToken(node)) {
return true;
}
node = node.parent;
}
return false;
}


/**
* Extends and formats a given error object
* @param {Object} error the error object
Expand Down Expand Up @@ -331,12 +359,12 @@ function getTokenType(token) {

// Some JSX tokens have to be determined based on their parent
if (token.parent) {
if (token.kind === SyntaxKind.Identifier && token.parent.kind === SyntaxKind.FirstNode) {
if (token.kind === SyntaxKind.Identifier && token.parent.kind === SyntaxKind.PropertyAccessExpression && hasJSXAncestor(token)) {
return "JSXIdentifier";
}

if (token.parent.kind >= SyntaxKind.JsxElement && token.parent.kind <= SyntaxKind.JsxAttribute) {
if (token.kind === SyntaxKind.FirstNode) {
if (isJSXToken(token.parent)) {
if (token.kind === SyntaxKind.PropertyAccessExpression) {
return "JSXMemberExpression";
}

Expand Down Expand Up @@ -616,12 +644,12 @@ module.exports = function(ast, extra) {

if (tagNameToken.type === "JSXMemberExpression") {

var isNestedMemberExpression = (node.tagName.left.kind === SyntaxKind.FirstNode);
var isNestedMemberExpression = (node.tagName.expression.kind === SyntaxKind.PropertyAccessExpression);

// Convert TSNode left and right objects into ESTreeNode object
// and property objects
tagNameToken.object = convertChild(node.tagName.left);
tagNameToken.property = convertChild(node.tagName.right);
tagNameToken.object = convertChild(node.tagName.expression);
tagNameToken.property = convertChild(node.tagName.name);

// Assign the appropriate types
tagNameToken.object.type = (isNestedMemberExpression) ? "JSXMemberExpression" : "JSXIdentifier";
Expand Down Expand Up @@ -1626,12 +1654,24 @@ module.exports = function(ast, extra) {
break;

case SyntaxKind.PropertyAccessExpression:
assign(result, {
type: "MemberExpression",
object: convertChild(node.expression),
property: convertChild(node.name),
computed: false
});
if (isJSXToken(parent)) {
var jsxMemberExpression = {
type: "MemberExpression",
object: convertChild(node.expression),
property: convertChild(node.name)
};
var isNestedMemberExpression = (node.expression.kind === SyntaxKind.PropertyAccessExpression);
jsxMemberExpression.object.type = (isNestedMemberExpression) ? "MemberExpression" : "JSXIdentifier";
jsxMemberExpression.property.type = "JSXIdentifier";
assign(result, jsxMemberExpression);
} else {
assign(result, {
type: "MemberExpression",
object: convertChild(node.expression),
property: convertChild(node.name),
computed: false
});
}
break;

case SyntaxKind.ElementAccessExpression:
Expand Down