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    metalsmith-inject-metadata

    1.0.7 • Public • Published

    metalsmith-inject-metadata

    npm version build status downloads

    A Metalsmith plugin for injecting metadata constants into source file data.

    This plugin injects Metalsmith metadata values into source file data during the build process. Metadata values can be used as program constants containing such things as file paths or configuration settings. Whereas template plugins pull data from the file object, this plugin injects data into the file object before the template build step occurs.

    Table of Contents

    1. Installation
    2. Example
    3. Options
    4. License

    Installation

    $ npm install metalsmith-inject-metadata

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    Examples

    Basic

    Configuration in metalsmith.json:

    {
      "metadata": {
        "images": "path/to/batman/images",
        "hero": "Batman"
      },
      "plugins": {
        "metalsmith-inject-metadata": {}
      }
    }

    Source file src/index.md:

    ---
    gotham: {{ hero }} is one half of the dynamic duo!
    ---
    Have you read the latest {{ hero }} comic?
    Look at this amazing cover: {{ images }}/batman.jpg!
    

    Results in file key gotham:

    "Batman is one half of the dynamic duo!"
    

    And file build/index.md (as well as the buffer at file key contents):

    Have you read the latest Batman comic?
    Look at this amazing cover: path/to/batman/images/batman.jpg!
    

    Nested Objects

    Configuration in metalsmith.json:

    {
      "metadata": {
        "superheroes": {
          "bats": {
            "gotham": "Batman"
          }
        }
      },
      "plugins": {
        "metalsmith-inject-metadata": {
          "metadataKeys": "superheroes.bats.gotham"
        }
      }
    }

    Source file src/index.md:

    ---
    gotham:
      vigilantes:
        people: {{ superheroes.bats.gotham }} is a vigilante!
    ---
    Have you read the latest {{ superheroes.bats.gotham }} comic?
    

    Results in file key gotham.vigilantes.people:

    "Batman is a vigilante!"
    

    And file build/index.md (as well as the buffer at file key contents):

    Have you read the latest Batman comic?
    

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    Options

    Pass options to metalsmith-inject-metadata using the Metalsmith Javascript API or CLI. These are the available plugin options:

    Option Type Description
    pattern string[]|string Pattern used to match file names.
    metadataKeys string[]|string Metadata keys to inject into files.
    metadataKeyBounds object Key marker bounds used to match the metadata key.
    metadataKeyBounds.left string Left bound of the metadata key marker.
    metadataKeyBounds.right string Right bound of the metadata key marker.
    fileKeys string[]|string File keys with injectable data.

    Defaults

    {
      "plugins": {
        "metalsmith-inject-metadata": {
          "pattern": ["**/*"],
          "metadataKeys": ["*"],
          "metadataKeyBounds": {
            "left": "{{ ",
            "right": " }}",
          },
          "fileKeys": ["*"]
        }
      }
    }

    Option Details

    pattern

    Fed directly into multimatch as the mechanism to select source files.

    metadataKeys

    Key names matching the Metalsmith metadata object. Only the key(s) listed here will be injected into file data. Keys that do not match the metadata object will be ignored. Use wildcards '*' or ['*'] to select all metadata keys.

    Nested metadata keys can be referenced using dot notation. When injecting nested metadata keys, the wildcard option will no longer work.

    Example:

    Configuration in metalsmith.json:

    {
      "metadata": {
        "superheroes": {
          "bats": {
            "gotham": "Batman"
          }
        }
      },
      "plugins": {
        "metalsmith-inject-metadata": {
          "metadataKeys": "superheroes.bats.gotham"
        }
      }
    }

    Source file src/index.md:

    ---
    hero: {{ superheroes.bats.gotham }} is one half of the dynamic duo!
    ---
    

    metadataKeyBounds

    Configuration object containing settings for the metadata key markers inserted into file data. Setting the bounds to empty strings will result in a "find and replace" for all words in the text data matching the metadata key(s).

    Example: {{ myKey }} or myKey

    metadataKeyBoundsLeft

    Indicates the left bound of the metadata key marker inserted into the file data.

    Example: {{

    metadataKeyBoundsRight

    Indicates the right bound of the metadata key marker inserted into the file data.

    Example: }}

    fileKeys

    Key names matching the Metalsmith file object. Only the key(s) listed here will be checked against the list of injected metadata keys. Keys that do not match a file key will be ignored. Use wildcards '*' or ['*'] to select all file keys.

    Nested front-matter file keys are referenced using the top-level key. Wildcards will also work.

    Example:

    Note: fileKeys is optional here.

    Configuration in metalsmith.json:

    {
      "metadata": {
        "hero": "Batman"
      },
      "plugins": {
        "metalsmith-inject-metadata": {
          "fileKeys": "gotham"
        }
      }
    }

    Source file src/index.md:

    ---
    gotham:
      vigilantes:
        bats: {{ hero }} is a vigilante!
    ---
    

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    License

    MIT

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    Install

    npm i metalsmith-inject-metadata

    DownloadsWeekly Downloads

    11

    Version

    1.0.7

    License

    MIT

    Unpacked Size

    18.8 kB

    Total Files

    5

    Last publish

    Collaborators

    • davidtimmons