@objectivity/angular-schematic-utils
Version:
Utilities for working with Schematics.
72 lines • 2.56 kB
JavaScript
"use strict";
/**
* Source: https://github.com/angular/angular-cli/blob/master/packages/schematics/angular/utility/json-file.ts
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.JSONFile = void 0;
const jsonc_parser_1 = require("jsonc-parser");
/** @internal */
class JSONFile {
constructor(host, path) {
this.host = host;
this.path = path;
const buffer = this.host.read(this.path);
if (buffer) {
this.content = buffer.toString();
}
else {
throw new Error(`Could not read '${path}'.`);
}
}
get JsonAst() {
if (this._jsonAst) {
return this._jsonAst;
}
const errors = [];
this._jsonAst = jsonc_parser_1.parseTree(this.content, errors);
if (errors.length) {
const { error, offset } = errors[0];
throw new Error(`Failed to parse "${this.path}" as JSON AST Object. ${jsonc_parser_1.printParseErrorCode(error)} at location: ${offset}.`);
}
return this._jsonAst;
}
get(jsonPath) {
if (jsonPath.length === 0) {
return jsonc_parser_1.getNodeValue(this.JsonAst);
}
const node = jsonc_parser_1.findNodeAtLocation(this.JsonAst, jsonPath);
return node === undefined ? undefined : jsonc_parser_1.getNodeValue(node);
}
modify(jsonPath, value, insertInOrder) {
let getInsertionIndex;
if (insertInOrder === undefined) {
const property = jsonPath.slice(-1)[0];
getInsertionIndex = properties => [...properties, property].sort().findIndex(p => p === property);
}
else if (insertInOrder !== false) {
getInsertionIndex = insertInOrder;
}
const edits = jsonc_parser_1.modify(this.content, jsonPath, value, {
getInsertionIndex,
formattingOptions: {
insertSpaces: true,
tabSize: 2,
},
});
this.content = jsonc_parser_1.applyEdits(this.content, edits);
this.host.overwrite(this.path, this.content);
this._jsonAst = undefined;
}
remove(jsonPath) {
if (this.get(jsonPath) !== undefined) {
this.modify(jsonPath, undefined);
}
}
}
exports.JSONFile = JSONFile;
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