Flatten — Data Flattening Reference

---

name: "flatten"

version: "1.0.0"

description: "Data flatten reference — nested-to-flat conversion, JSON/array flattening, dot-notation keys, depth control. Use when transforming hierarchical data into flat structures or normalizing nested records."

author: "BytesAgain"

homepage: "https://bytesagain.com"

source: "https://github.com/bytesagain/ai-skills"

tags: [flatten, data, nested, json, array, transform, normalize, atomic]

category: "atomic"

---

# Flatten — Data Flattening Reference

Quick-reference skill for flattening nested data structures into flat key-value pairs or single-level arrays.

When to Use

Commands

`intro`

scripts/script.sh intro

Overview of data flattening — what it means, why it matters, core concepts.

`json`

scripts/script.sh json

JSON object flattening — dot-notation keys, bracket notation, separator options.

`array`

scripts/script.sh array

Array flattening — multi-dimensional to single-level, depth-limited flatten.

`algorithms`

scripts/script.sh algorithms

Flattening algorithms — recursive vs iterative, stack-based, BFS approaches.

`languages`

scripts/script.sh languages

Flatten implementations across languages — JavaScript, Python, Go, Bash, SQL.

`edgecases`

scripts/script.sh edgecases

Edge cases — circular references, null values, mixed types, empty containers.

`unflatten`

scripts/script.sh unflatten

Reverse operation — reconstructing nested structures from flat key-value pairs.

`patterns`

scripts/script.sh patterns

Real-world patterns — ETL pipelines, log normalization, config merging.

`help`

scripts/script.sh help

`version`

scripts/script.sh version

Configuration

| Variable | Description |

|----------|-------------|

| `FLATTEN_DIR` | Data directory (default: ~/.flatten/) |

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