@phenomnomnominal/tsquery
Version:
Query TypeScript ASTs with the esquery API!
93 lines • 3.17 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.parse = void 0;
const esquery = __importStar(require("esquery"));
const typescript_1 = require("typescript");
const IDENTIFIER_QUERY = 'identifier';
/**
* @public
* Parse a `string` into an ESQuery `Selector`.
*
* @param selector - a TSQuery `Selector` (using the [ESQuery selector syntax](https://github.com/estools/esquery)).
* @returns a validated `Selector` or `null` if the input `string` is invalid.
* @throws if the `Selector` is syntactically valid, but contains an invalid TypeScript Node kind.
*/
function parse(selector) {
const cleanSelector = stripComments(stripNewLines(selector));
return validate(esquery.parse(cleanSelector));
}
exports.parse = parse;
/**
* @public
* Ensure that an input is a parsed ESQuery `Selector`.
*
* @param selector - a TSQuery `Selector` (using the [ESQuery selector syntax](https://github.com/estools/esquery)).
* @returns a validated `Selector`
* @throws if the input `string` is invalid.
*/
parse.ensure = function ensure(selector) {
if (isSelector(selector)) {
return selector;
}
const parsed = parse(selector);
if (!parsed) {
throw new SyntaxError(`"${selector}" is not a valid TSQuery Selector.`);
}
return parsed;
};
function isSelector(selector) {
return typeof selector !== 'string';
}
function stripComments(input) {
return input.replace(/\/\*[\w\W]*\*\//g, '');
}
function stripNewLines(input) {
return input.replace(/\n/g, '');
}
function validate(selector) {
if (!selector) {
return null;
}
const { selectors } = selector;
if (selectors) {
selectors.map(validate);
}
const { left, right } = selector;
if (left) {
validate(left);
}
if (right) {
validate(right);
}
if (selector.type === IDENTIFIER_QUERY) {
const { value } = selector;
if (typescript_1.SyntaxKind[value] == null) {
throw new SyntaxError(`"${value}" is not a valid TypeScript Node kind.`);
}
}
return selector;
}
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