amphtml-autoscript

v1.5.2

Published

3 years ago

Imports required AMP HTML custom-elements into source files.

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garanj

AMP amphtml custom-element

Gulp AMP HTML script importer

A Gulp plugin for automating the import of required custom-element <script/> tags in AMPHTML files.

build

Installation

Install package with NPM and add it to your development dependencies:

npm install --save-dev amphtml-autoscript

Usage

Add placeholder to your source files:

<!doctype html>
<html amp lang="en">
  <head>
    <meta charset="utf-8">
    ${ampjs}
    <title>Hello, amphtml-autoscript!</title>

    <!-- ..... -->

Incorporate the package in your gulpfile:

const autoScript = require('amphtml-autoscript').create();

gulp.task('tag', () => {
  return gulp.src('*.html')
      .pipe(autoScript())
      .pipe(gulp.dest('dist/'));
});

Generated AMP HTML now includes any required custom-element <script/> tags:

<!doctype html>
<html amp lang="en">
  <head>
    <meta charset="utf-8">
    <script async src="https://cdn.ampproject.org/v0.js"></script>
    <script async custom-element="amp-bind" src="https://cdn.ampproject.org/v0/amp-bind-latest.js"></script>
    <title>Hello, amphtml-autoscript!</title>

    <!-- ..... -->

Options

Options can be passed to .create(options) to change the operation in the following ways:

{
  // Alternative placeholder to replace, e.g. [AMPJS], ${ampjs}, <<AMP-JS>>
  placeholder: '...',
  // Mode to operate in, either autoScript.MODES.PLACEHOLDER or autoScript.MODES.HEADER_INSERTION
  // either replacing a string, or placing the elements at the end of the <head/> tag.
  mode: autoScript.MODES.<value>,
  // Force the update of the AMP components map, which will otherwise not be fetched again.
  updateComponentsMap: true,
  // Force use of 'latest' for all components
  forceLatest: true
}

Local component version overrides

Under normal operation, the component version will be read from components.json, part of the module. This will not update unless forced using the options above.

To specify a version local to your project, create a amp-versions.json file in your build working directory, specifying desired versions e.g.

{
  "amp-carousel": "0.2"
}

NOTE: versions in amp-versions.json will take precedence over forceLatest.

Release Notes

1.5.2

Updated to reflect changes in amphtml-validator error category reporting.

1.5.1

Updated version dependencies.

1.5.0

Added forceLatest and local component versions override.

1.4.0

Added file to store snapshot of component versions.

1.3.1

Fixed bug in callback usage that caused stream write errors

1.3.0

Moved to using validator.
Added HEADER_INSERTION mode.