conventional-changelog-writer
Version:
Write logs based on conventional commits and templates.
70 lines • 5.39 kB
JavaScript
import Handlebars from 'handlebars';
import { filterRevertedCommitsSync } from 'conventional-commits-filter';
import { getTemplateContext } from './context.js';
import { mainTemplate, headerPartial, commitPartial, footerPartial } from './templates.js';
/**
* Load templates from options or fall back to built-in defaults.
* @param options
* @returns Templates strings object.
*/
export function loadTemplates(options = {}) {
return {
mainTemplate: options.mainTemplate || mainTemplate,
headerPartial: options.headerPartial || headerPartial,
commitPartial: options.commitPartial || commitPartial,
footerPartial: options.footerPartial || footerPartial
};
}
/**
* Compile Handlebars templates.
* @param templates
* @returns Handlebars template instance.
*/
export function compileTemplates(templates) {
const { mainTemplate, headerPartial, commitPartial, footerPartial, partials } = templates;
Handlebars.registerPartial('header', headerPartial);
Handlebars.registerPartial('commit', commitPartial);
Handlebars.registerPartial('footer', footerPartial);
if (partials) {
Object.entries(partials).forEach(([name, partial]) => {
if (typeof partial === 'string') {
Handlebars.registerPartial(name, partial);
}
});
}
return Handlebars.compile(mainTemplate, {
noEscape: true
});
}
/**
* Create template renderer.
* @param context
* @param options
* @returns Template render function.
*/
export function createTemplateRenderer(context, options) {
const { ignoreReverted } = options;
const template = compileTemplates(options);
return async (commits, keyCommit, subsequent) => {
const notes = [];
const commitsForTemplate = (ignoreReverted
? Array.from(filterRevertedCommitsSync(commits))
: commits).map(commit => ({
...commit,
notes: commit.notes.map((note) => {
const commitNote = {
...note,
commit
};
notes.push(commitNote);
return commitNote;
})
}));
const templateContext = await getTemplateContext(keyCommit, commits, commitsForTemplate, notes, context, options);
const rendered = template(templateContext).trim();
return rendered.length > 0
? `${subsequent ? '\n' : ''}${rendered}\n`
: '';
};
}
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