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Error catalog

Validator issue kinds, cause, path, suggestions, machine-applicable fixes and CLI exit codes. Check the resolved library and schema version.

View .md Agent setup

WestCoastCharts.validate(options) (module west-coast-charts/agent/validate) checks a chart options object against the JSON Schema generated from our own types/*.d.ts (dist/schema/wcc-options.schema.json, draft 2020-12, versioned as x-wcc-version). The result is meant for people and for agents (LLMs, the wcc CLI): every issue is structured, names the exact path, says what is wrong, and carries a machine-applicable fix when one is known.

Result

js
{
  ok: false,            // no issue of severity 'error'
  errors: 2,
  warnings: 1,
  exitCode: 4,          // highest-priority exit code of all issues (see below), 0 when ok
  schemaVersion: '1.0.0',
  issues: [ /* WccIssue */ ]
}

Issue

field type meaning
kind 'unknown_option' | 'type_mismatch' | 'invalid_value' | 'deprecated' | 'license_required' what is wrong
severity 'error' | 'warning' errors make ok false; warnings never do
path string dotted path with array indices: series[0].data, plotOptions.bar.borderRadius
pointer string the same as RFC 6901 JSON Pointer: /series/0/data
message string one precise sentence: what was found and what is allowed
hint string what to do instead (Did you mean legend.show?)
suggestion string | null best replacement: a path (unknown/deprecated), a value (invalid/type), a URL (license)
alternatives string[] up to 3 further candidates, best first
fix {op:'rename',from,to,value?} | {op:'set',path,value} | {op:'remove',path} | null apply with applyFixes(options, issues)
exitCode number the CLI exit code this issue alone maps to (warnings: 0)

Kinds

kind severity exit code when example
unknown_option error (warning inside open objects such as series items, chart.events handlers or other index-signature types) 2 a key the schema does not know. Suggestions come from known aliases (Chart.js, Highcharts, ECharts, Plotly, Vega-Lite, older ApexCharts habits), edit distance, casing, and a global key index that finds options at the wrong place (preferring plotOptions.<chart.type>) legend.enabled → legend.show; xAxis → xaxis; chart.aggregate (radialColumn) → plotOptions.radialColumn.aggregate
type_mismatch error 2 right key, wrong JSON type. Coercions are offered where they are lossless ("12" → 12, "true" → true, true for an object option → { enabled: true } / { show: true }, a string for a string array → [string]) colors: '#f00' → ['#f00']; chart.animations: false → { enabled: false }
invalid_value error 2 the value is not one of the allowed literals stroke.curve: 'spline' → 'smooth'; chart.type: 'column' → 'bar'
deprecated error when the option has no effect any more (older ApexCharts keys), warning when it is @deprecated in our types but still honoured 2 / 0 the option was replaced; the fix translates the value where possible plotOptions.bar.endingShape: 'rounded' → plotOptions.bar.borderRadius: 4
license_required error for a premium chart.type, warning for premium-only options under plotOptions (ignored without premium) 4 / 0 only when premium is known to be absent (validate(o, { premium: false }); the chart-creation hook detects west-coast-charts/premium itself) chart.type: 'sankey' → install west-coast-charts/premium, card-free 30-day trial

CLI exit codes

Shared by the validator (result.exitCode, issue.exitCode, exitCodeOf(result)) and the wcc CLI.

code name (EXIT) meaning from the validator
0 ok success; warnings may exist ok: true
1 internal internal error (bug, crash, unreadable schema) validator threw
2 usage schema / usage error: invalid options or arguments unknown_option, type_mismatch, invalid_value, deprecated (error)
3 notFound a referenced thing does not exist (file, chart id, series, template) CLI only
4 license a premium feature is used without premium / without a valid key license_required (error)
5 conflict the operation conflicts with the current state (stale revision, concurrent edit, option combination that cannot both hold) CLI only
6 confirmation a destructive or billable step needs explicit confirmation (--yes) CLI only

When several issues are present, result.exitCode is the most specific one: 4 before 2, 2 before 0. An agent should fix all issues of a run, not just the first; applyFixes applies every fix it can.

At chart creation

chart.validate: 'warn' | 'error' | 'off' (default 'warn') once the module is loaded (import 'west-coast-charts/agent/validate' installs itself; it is never part of core):

  • 'warn': one console.warn listing every issue with its hint; the chart renders.
  • 'error': console.error and chart.render() / updateOptions() reject with an Error whose code is 'WCC_INVALID_OPTIONS', .issues the issue list and .exitCode the exit code.
  • 'off': no check.

Example

js
import { validate, applyFixes } from 'west-coast-charts/agent/validate'

const r = validate({ chart: { type: 'bar' }, legend: { enabled: false }, stroke: { curve: 'spline' } })
// r.exitCode === 2
// r.issues[0]: { kind: 'unknown_option', path: 'legend.enabled', suggestion: 'legend.show',
//                hint: 'Did you mean legend.show?', fix: { op: 'rename', from: 'legend.enabled', to: 'legend.show' } }
// r.issues[1]: { kind: 'invalid_value', path: 'stroke.curve', suggestion: 'smooth', fix: { op: 'set', path: 'stroke.curve', value: 'smooth' } }
const fixed = applyFixes(options, r.issues) // validate(fixed).ok === true

WestCoast Charts 1.1.5 · generated from the library docs at commit 95f093ba. Code examples in the guide are executed by the library's docs check.