lit-analyzer
Version:
CLI that type checks bindings in lit-html templates
115 lines (114 loc) • 4 kB
JavaScript
;
var __values = (this && this.__values) || function(o) {
var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0;
if (m) return m.call(o);
if (o && typeof o.length === "number") return {
next: function () {
if (o && i >= o.length) o = void 0;
return { value: o && o[i++], done: !o };
}
};
throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.getNodeIdentifier = exports.leadingCommentsIncludes = exports.nodeIntersects = exports.getNodeAtPosition = exports.findChild = exports.findParent = void 0;
var ts_module_js_1 = require("../ts-module.js");
var range_util_js_1 = require("./range-util.js");
/**
* Tests nodes recursively walking up the tree using parent nodes.
* @param node
* @param test
*/
function findParent(node, test) {
if (node == null)
return;
return test(node) ? node : findParent(node.parent, test);
}
exports.findParent = findParent;
function findChild(node, test) {
if (!node)
return;
if (test(node))
return node;
return node.forEachChild(function (child) { return findChild(child, test); });
}
exports.findChild = findChild;
/**
* Returns a node at a specific position.
* @param node
* @param position
*/
function getNodeAtPosition(node, position) {
if (!(0, range_util_js_1.intersects)(position, { start: node.pos, end: node.end })) {
return;
}
return node.forEachChild(function (child) { return getNodeAtPosition(child, position); }) || node;
}
exports.getNodeAtPosition = getNodeAtPosition;
function nodeIntersects(nodeA, nodeB) {
return (0, range_util_js_1.intersects)({
start: nodeA.getStart(),
end: nodeA.getEnd()
}, {
start: nodeB.getStart(),
end: nodeB.getEnd()
});
}
exports.nodeIntersects = nodeIntersects;
/**
* Checks whether a leading comment includes a given search string.
* @param text
* @param pos
* @param needle
*/
function leadingCommentsIncludes(text, pos, needle) {
var e_1, _a;
// Get the leading comments to the position.
var leadingComments = ts_module_js_1.tsModule.ts.getLeadingCommentRanges(text, pos);
// If any leading comments exists, we check whether the needle matches the context of the comment.
if (leadingComments != null) {
try {
for (var leadingComments_1 = __values(leadingComments), leadingComments_1_1 = leadingComments_1.next(); !leadingComments_1_1.done; leadingComments_1_1 = leadingComments_1.next()) {
var comment = leadingComments_1_1.value;
var commentText = text.substring(comment.pos, comment.end);
if (commentText.includes(needle)) {
return true;
}
}
}
catch (e_1_1) { e_1 = { error: e_1_1 }; }
finally {
try {
if (leadingComments_1_1 && !leadingComments_1_1.done && (_a = leadingComments_1.return)) _a.call(leadingComments_1);
}
finally { if (e_1) throw e_1.error; }
}
}
return false;
}
exports.leadingCommentsIncludes = leadingCommentsIncludes;
/**
* Returns the declaration name of a given node if possible.
* @param node
* @param ts
*/
function getNodeIdentifier(node, ts) {
if (ts.isIdentifier(node)) {
return node;
}
else if (ts.isCallExpression(node) && ts.isIdentifier(node.expression)) {
return node.expression;
}
else if ((ts.isClassLike(node) ||
ts.isInterfaceDeclaration(node) ||
ts.isVariableDeclaration(node) ||
ts.isMethodDeclaration(node) ||
ts.isPropertyDeclaration(node) ||
ts.isFunctionDeclaration(node)) &&
node.name != null &&
ts.isIdentifier(node.name)) {
return node.name;
}
return undefined;
}
exports.getNodeIdentifier = getNodeIdentifier;