js-yaml-cloudformation-schema

js-yaml-cloudformation-schema

Schema to allow js-yaml to process YAML formatted CloudFormation templates that use short form syntax for intrinsic functions while parsing or dumping, for example: !Ref, !Base64.

See tags.json for currently supported short form syntax for intrinsic functions, also known as local tags in the YAML spec.

This is a fork of yyolk/cloudformation-js-yaml-schema that changes the structure of the parsed JavaScript representation of the CloudFormation template to match the parsed representation of a JSON formatted CloudFormation template.

Usage

const yaml = require('js-yaml');
const { CLOUDFORMATION_SCHEMA } = require('js-yaml-cloudformation-schema');

let templateBody = fs.readFileSync(templatePath, 'utf8');
templateBody = yaml.safeLoad(templateBody, { schema: CLOUDFORMATION_SCHEMA });
console.log(JSON.stringify(templateBody, null, 2));

templateBody = yaml.safeDump(templateBody, { schema: CLOUDFORMATION_SCHEMA });
console.log(templateBody);