dtrim
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A tool for trimming deep/lenghty javascript structures. Some potential usages are: debugging, logging or data sanitization.
111 lines • 3.59 kB
JavaScript
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var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.trimmer = void 0;
const utils = __importStar(require("./utils"));
const defaultOpts = {
depth: 4,
size: 64,
string: 512,
buffer: true,
getters: true,
retain: new Set(),
};
const walker = (opts, node, depth) => {
var _a;
if (typeof node === 'string') {
return node.length > opts.string
? `${node.substr(0, opts.string)}...`
: node;
}
if (typeof node === 'number' ||
typeof node === 'boolean' ||
typeof node === 'undefined' ||
node === null) {
return node;
}
if (typeof node === 'function') {
return '[Function]';
}
if (node instanceof Date) {
return node.toISOString();
}
if (depth >= opts.depth) {
return '[Object]';
}
if (Buffer.isBuffer(node)) {
return opts.buffer
? `Buffer(${node.length})`
: walker(opts, node.toString('base64'), depth + 1);
}
const size = utils.getSize(node);
if (size > opts.size) {
if (Array.isArray(node)) {
return `Array(${size})`;
}
return `Object(${size})`;
}
const output = Array.isArray(node) ? [] : {};
if (node instanceof Error) {
output.message = node.message;
output.stack = node.stack;
output.name = node.name;
}
for (const key in node) {
if (depth === 0 && opts.retain.has(key)) {
output[key] = node[key];
continue;
}
if (opts.getters === true &&
((_a = Object.getOwnPropertyDescriptor(node, key)) === null || _a === void 0 ? void 0 : _a.get)) {
output[key] = '[Getter]';
continue;
}
output[key] = walker(opts, node[key], depth + 1);
}
if (opts.getters === false) {
const prototype = Object.getPrototypeOf(node);
if (prototype) {
const methods = Object.getOwnPropertyDescriptors(prototype);
for (const key in methods) {
if (methods[key].get) {
output[key] = walker(opts, node[key], depth + 1);
}
}
}
}
return output;
};
const trimmer = (userOpts) => {
const opts = { ...defaultOpts, ...userOpts };
return (input) => {
if (typeof input !== 'object' || input === null) {
return input;
}
return walker(opts, input, 0);
};
};
exports.trimmer = trimmer;
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