Implement Toml module with full TOML 1.0.0 support by MariusStorhaug · Pull Request #15 · PSModule/Toml

Marius Storhaug (MariusStorhaug) · 2026-07-19T14:07:39Z

Summary

Implements a production-quality PowerShell module for reading and writing TOML data, following PSModule and MSXOrg standards.

Public API

Command	Description
`ConvertFrom-Toml`	Parse TOML text → `TomlDocument`
`ConvertTo-Toml`	Serialize object/`TomlDocument` → TOML text
`Import-Toml`	Read TOML file → `TomlDocument` with `FilePath`
`Export-Toml`	Write object or `TomlDocument` to file (supports `-WhatIf`)

Architecture

Parsing engine: Tomlyn v2.0.0 — a conformant .NET TOML 1.0.0 library loaded from src/assemblies/Tomlyn.dll
Public output type: TomlDocument class with Data ([OrderedDictionary]) and FilePath ([string])
Private helpers: ConvertFrom-TomlynValue/Table/DateTime + ConvertTo-TomlynValue/Table/Array — all with comment-based help
Structure: follows Process-PSModule layout exactly

TOML type mapping

TOML type	PowerShell type
String	`[string]`
Integer	`[long]`
Float	`[double]`
Boolean	`[bool]`
Offset date-time	`[DateTimeOffset]`
Local date-time	`[DateTime]` (Kind=Unspecified)
Local date	`[DateTime]` (00:00:00)
Local time	`[TimeSpan]`
Array	`[object[]]`
Table / Inline table	`[ordered]` hashtable
Array of tables	`[object[]]` of hashtables

Tests: 116/116 passing

ConvertFrom-Toml.Tests.ps1 — 63 tests covering full TOML 1.0.0 spec
ConvertTo-Toml.Tests.ps1 — 26 tests for serialization + round-trips
Import-Toml.Tests.ps1 — 13 tests for file import
Export-Toml.Tests.ps1 — 14 tests for file export + WhatIf + encoding
tests/data/ — 9 TOML fixture files

PSScriptAnalyzer: 0 errors, 0 warnings

Local development

./build.ps1
Import-Module Pester -MaximumVersion 5.99 -Force
$cfg = New-PesterConfiguration; $cfg.Run.Path = './tests'; Invoke-Pester -Configuration $cfg

- Add ConvertFrom-Toml, ConvertTo-Toml, Import-Toml, Export-Toml public commands - Add TomlDocument class with Data (OrderedDictionary) and FilePath properties - Add private helpers: ConvertFrom-TomlDateTime, ConvertFrom-TomlynTable, ConvertFrom-TomlynValue, ConvertTo-TomlynArray, ConvertTo-TomlynTable, ConvertTo-TomlynValue - Back with Tomlyn v2.0.0 (.NET TOML library) via src/assemblies/Tomlyn.dll - Enforce TOML 1.0.0 duplicate key and table redefinition rules via SyntaxParser.ParseStrict before deserializing - Map all 8 TOML types to PowerShell types (string, long, double, bool, DateTimeOffset, DateTime, TimeSpan, OrderedDictionary/object[]) - Add 116 Pester tests covering spec compliance, round-trips, file I/O, error handling, and all TOML 1.0.0 type categories - Add build.ps1 for local module assembly and test running - Add tests/bootstrap.ps1 for test module import - Add tests/data/ with 9 TOML fixture files - Update README.md with type mapping table, command reference, usage examples - Update examples/General.ps1 with comprehensive usage examples - Remove template placeholder files (LsonLib.dll, format/type XMLs, sample modules/scripts/variables) - Fix PSScriptAnalyzer warnings: UTF-8 BOM, indentation consistency PSScriptAnalyzer: 0 errors, 0 warnings Tests: 116/116 pass Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-07-19T14:10:35Z

Super-linter summary

Language	Validation result
CHECKOV	Pass ✅
GITHUB_ACTIONS	Pass ✅
GITLEAKS	Pass ✅
GIT_MERGE_CONFLICT_MARKERS	Pass ✅
MARKDOWN	Fail ❌
NATURAL_LANGUAGE	Pass ✅
POWERSHELL	Fail ❌
PRE_COMMIT	Pass ✅
SPELL_CODESPELL	Pass ✅
TRIVY	Pass ✅
YAML	Pass ✅

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/github/workspace/README.md:101:22 error MD060/table-column-style Table column style [Table pipe does not align with header for style "aligned"]

POWERSHELL


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                                                                   but this typ
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PSUseOutputTypeCorrectly            Information  ConvertTo- 123   The cmdlet 'C
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                                                                  rns an object
                                                                   of type 'Sys
                                                                  tem.Object[]'
                                                                   but this typ
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                                                                  ribute.


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PSAvoidUsingPositionalParameters    Information  build.ps1  21    Cmdlet 'Join-
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Implement Toml module with full TOML 1.0.0 support#15

Implement Toml module with full TOML 1.0.0 support#15
Marius Storhaug (MariusStorhaug) wants to merge 1 commit into
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build-toml-module

Marius Storhaug (MariusStorhaug) commented Jul 19, 2026

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Marius Storhaug (MariusStorhaug) commented Jul 19, 2026

Summary

Public API

Architecture

TOML type mapping

Tests: 116/116 passing

PSScriptAnalyzer: 0 errors, 0 warnings

Local development

Uh oh!

github-actions Bot commented Jul 19, 2026

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