Substring (`substringNode`)

Category: Data & Text

Intended behavior

Extracts Length characters from Text starting at Start (negative Start counts from the end).

Inputs

ID	Label	Type	Unwired default
`text`	Text	string	""
`start`	Start	number	0
`length`	Length	number	5
`enabled`	Enabled	boolean	true

Outputs

ID	Label	Type	Default
`out`	Out	string	undefined

Configuration defaults

{}

Observed frontend behavior

This calls the production passive computation with the declared input/config defaults. Cached state, trigger execution and project wiring are separate.

{
  "kind": "passive-default-probe",
  "outputs": {
    "out": ""
  }
}

Observed backend behavior

Offline production passive computation with the same declared defaults; no device or model service is invoked.

{
  "kind": "passive-default-probe",
  "outputs": {
    "out": ""
  }
}

Current frontend implementation

Extracted production branches; helper calls and project execution context are defined in the referenced modules.

src/lib/extra-node-compute.ts:96

substringNode: (inputs) => {
    const text = toStr(inputs.text);
    const raw = Math.trunc(toNum(inputs.start));
    const start = raw < 0 ? Math.max(0, text.length + raw) : raw;
    const length = Math.max(0, Math.trunc(toNum(inputs.length)));
    return { out: text.slice(start, start + length) };
  }

Implementation references

Verification limits

Default passive probe is an observation, not proof of all configurations, trigger behavior, or correctness. See ../NODE_RUNTIME_AUDIT.md and ../AUDIT_VALIDATION.md for test evidence.
Enabled=false uses the runtime bypass mapping; bypass output can differ from the normal declared output type.

Source fingerprint: 7e9d192bd3a559a7c50253919867601ef02c311d61e859f7afb4cadcfa508430. Rebuild with npm run docs:index.

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