@nxext/stencil/src/utils/ast-utils.js

Nx plugin for stenciljs

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.readTsSourceFile = readTsSourceFile;
exports.addImport = addImport;
exports.addAfterLastImport = addAfterLastImport;
const devkit_1 = require("@nx/devkit");
const tsquery_1 = require("@phenomnomnominal/tsquery");
function readTsSourceFile(host, path) {
    if (!host.exists(path)) {
        throw new Error(`Typescript file not readable (${path}).`);
    }
    else {
        const contentBuffer = host.read(path);
        return tsquery_1.tsquery.ast(contentBuffer.toString());
    }
}
function addImport(source, statement) {
    return [addAfterLastImport(source, statement)];
}
function addAfterLastImport(source, statement) {
    const allImports = (0, tsquery_1.tsquery)(source, 'ImportDeclaration');
    if (allImports.length > 0) {
        const lastImport = allImports[allImports.length - 1];
        return {
            type: devkit_1.ChangeType.Insert,
            index: lastImport.end + 1,
            text: `\n${statement}\n`,
        };
    }
    else {
        return {
            type: devkit_1.ChangeType.Insert,
            index: 0,
            text: `\n${statement}\n`,
        };
    }
}
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