BreakReason

CORE · type · Type contract

Lazy reasons preserve error construction and message evaluation on the rejection path only.

Import

TypeScript

import type { BreakReason } from '@jangts/agent-core/support';

JavaScript

/** @typedef {import('@jangts/agent-core/support').BreakReason} BreakReason */

Other public entry points:@jangts/agent-core, @jangts/agent-core/types, @jangts/agent-core/structs, @jangts/agent-core/support.

Definition

type BreakReason = Error | string | (() => Error | string);

Union branch structure

Examples

• Rejection checks, first match, and sequential processing: Use real lists to express multiple checks and enumerated dispatch; a single ordinary condition can still use if.

One explicit rejection

Beginner · Node.js

TypeScript

import { Support } from '@jangts/agent-core';
const input = '你好';
Support.breakWhile(!input.trim(), '问题不能为空');
console.log(input);

JavaScript

import { Support } from '@jangts/agent-core';
const input = '你好';
Support.breakWhile(!input.trim(), '问题不能为空');
console.log(input);

Checks with dependencies evaluated in order

Configuration · Node.js

TypeScript

import { Support } from '@jangts/agent-core';
const input: unknown = { name: 'Ivan' };
Support.breakWhile([
  { occur: !input || typeof input !== 'object', error: '需要对象' },
  { occur: () => !('name' in (input as object)), error: '缺少 name' },
]);
console.log(input);

JavaScript

import { Support } from '@jangts/agent-core';
const input = { name: 'Ivan' };
Support.breakWhile([
    { occur: !input || typeof input !== 'object', error: '需要对象' },
    { occur: () => !('name' in input), error: '缺少 name' },
]);
console.log(input);

Related policy source

• Actual rules for rejection checks and match short-circuiting