@jsverse/transloco-keys-manager/keys-builder/typescript/service.extractor.js

Extract translatable keys from projects that uses Transloco

import { tsquery } from '@phenomnomnominal/tsquery';
import ts from 'typescript';
import { buildKeysFromASTNodes } from './build-keys-from-ast-nodes.js';
function buildInjectFunctionQuery(nodeType) {
    return `${nodeType}:has(CallExpression:has(Identifier[name=inject]):has(Identifier[name=TranslocoService]))`;
}
export function serviceExtractor(ast) {
    const constructorInjection = 'Constructor Parameter:has(TypeReference Identifier[name=TranslocoService])';
    const injectFunction = ['PropertyDeclaration', 'VariableDeclaration'].map(buildInjectFunctionQuery);
    const serviceNameQuery = [constructorInjection, injectFunction].join(',');
    const serviceNameNodes = tsquery(ast, serviceNameQuery);
    let result = [];
    for (const serviceName of serviceNameNodes) {
        if (ts.isParameter(serviceName) ||
            ts.isPropertyDeclaration(serviceName) ||
            ts.isVariableDeclaration(serviceName)) {
            const propName = serviceName.name.getText();
            const methodNodes = tsquery(ast, `PropertyAccessExpression:has([text="${propName}"])`);
            result = result.concat(buildKeysFromASTNodes(methodNodes));
        }
    }
    return result;
}
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