@nodesecure/js-x-ray/dist/parsers/JsSourceParser.js

JavaScript AST XRay analysis

// Import Node.js Dependencies
import { stripTypeScriptTypes } from "node:module";
// Import Third-party Dependencies
import { parseModule, parse } from "meriyah";
// CONSTANTS
const kParsingOptions = {
    next: true,
    loc: true,
    raw: true,
    jsx: true
};
export class JsSourceParser {
    static FileExtensions = new Set([
        ".js",
        ".cjs",
        ".mjs",
        ".jsx"
    ]);
    #stripTypeScriptTypes = false;
    constructor(options = {}) {
        this.#stripTypeScriptTypes = options.stripTypeScriptTypes ?? false;
    }
    parse(source) {
        const cleanedSource = this.#stripTypeScriptTypes ? stripTypeScriptTypes(source) : source;
        try {
            const { body } = parseModule(cleanedSource, structuredClone(kParsingOptions));
            return body;
        }
        catch (error) {
            const syntaxError = error;
            const isIllegalReturn = syntaxError.description.includes("Illegal return statement");
            if (isIllegalReturn) {
                const { body } = parse(cleanedSource, {
                    ...structuredClone(kParsingOptions),
                    sourceType: "commonjs"
                });
                return body;
            }
            throw error;
        }
    }
}
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