@vendure/ngx-translate-extract/parsers/function.parser.js

Extract strings from projects using ngx-translate

import pkg from 'typescript';
import { getStringsFromExpression, findSimpleCallExpressions, getAST } from '../utils/ast-helpers.js';
import { TranslationCollection } from '../utils/translation.collection.js';
const { isIdentifier } = pkg;
export class FunctionParser {
    fnName;
    constructor(fnName) {
        this.fnName = fnName;
    }
    extract(source, filePath) {
        let collection = new TranslationCollection();
        const sourceFile = getAST(source, filePath).parsedFile;
        if (!sourceFile) {
            return collection;
        }
        const callExpressions = findSimpleCallExpressions(sourceFile, this.fnName);
        callExpressions.forEach((callExpression) => {
            if (!isIdentifier(callExpression.expression) || callExpression.expression.escapedText !== this.fnName) {
                return;
            }
            const [firstArg] = callExpression.arguments;
            if (!firstArg) {
                return;
            }
            const strings = getStringsFromExpression(firstArg);
            collection = collection.addKeys(strings, filePath);
        });
        return collection;
    }
}