⚠️ Development of this library has slowed-down
I am still using yaml.js in production for some projects, it works fine in all the situations I needed it. That said, I am not actively working with raw javascript environments (mostly using haxe now, if you are curious), thus I don't have much bandwidth to actively provide support to the posted issues asking for new features or bugfixes that don't affect my own use cases of the library. If this situation is an issue for you, I suggest you use js-yaml which is a great and pretty feature-complete yaml parser and dumper for javascript. Pull Requests are still welcome, as long as they don't break the current set of unit tests!
Thanks 🙏
Standalone JavaScript YAML 1.2 Parser & Encoder. Works under node.js and all major browsers. Also brings command line YAML/JSON conversion tools.
Mainly inspired from Symfony Yaml Component.
Import yaml.js in your html page:
<script type="text/javascript" src="yaml.js"></script>
Parse yaml string:
nativeObject = YAML.parse(yamlString);
Dump native object into yaml string:
yamlString = YAML.stringify(nativeObject[, inline /* @integer depth to start using inline notation at */[, spaces /* @integer number of spaces to use for indentation */] ]);
Load yaml file:
nativeObject = YAML.load('file.yml');
Load yaml file:
YAML.load('file.yml', function(result)
{
nativeObject = result;
});
Install module:
npm install yamljs
Use it:
YAML = require('yamljs');
// parse YAML string
nativeObject = YAML.parse(yamlString);
// Generate YAML
yamlString = YAML.stringify(nativeObject, 4);
// Load yaml file using YAML.load
nativeObject = YAML.load('myfile.yml');
You can enable the command line tools by installing yamljs as a global module:
npm install -g yamljs
Then, two cli commands should become available: yaml2json and json2yaml. They let you convert YAML to JSON and JSON to YAML very easily.
yaml2json
usage: yaml2json [-h] [-v] [-p] [-i INDENTATION] [-s] [-r] [-w] input
Positional arguments:
input YAML file or directory containing YAML files.
Optional arguments:
-h, --help Show this help message and exit.
-v, --version Show program's version number and exit.
-p, --pretty Output pretty (indented) JSON.
-i INDENTATION, --indentation INDENTATION
Number of space characters used to indent code (use
with --pretty, default: 2).
-s, --save Save output inside JSON file(s) with the same name.
-r, --recursive If the input is a directory, also find YAML files in
sub-directories recursively.
-w, --watch Watch for changes.
json2yaml
usage: json2yaml [-h] [-v] [-d DEPTH] [-i INDENTATION] [-s] [-r] [-w] input
Positional arguments:
input JSON file or directory containing JSON files.
Optional arguments:
-h, --help Show this help message and exit.
-v, --version Show program's version number and exit.
-d DEPTH, --depth DEPTH
Set minimum level of depth before generating inline
YAML (default: 2).
-i INDENTATION, --indentation INDENTATION
Number of space characters used to indent code
(default: 2).
-s, --save Save output inside YML file(s) with the same name.
-r, --recursive If the input is a directory, also find JSON files in
sub-directories recursively.
-w, --watch Watch for changes.
examples
# Convert YAML to JSON and output resulting JSON on the console
yaml2json myfile.yml
# Store output inside a JSON file
yaml2json myfile.yml > output.json
# Output "pretty" (indented) JSON
yaml2json myfile.yml --pretty
# Save the output inside a file called myfile.json
yaml2json myfile.yml --pretty --save
# Watch a full directory and convert any YAML file into its JSON equivalent
yaml2json mydirectory --pretty --save --recursive
# Convert JSON to YAML and store output inside a YAML file
json2yaml myfile.json > output.yml
# Output YAML that will be inlined only after 8 levels of indentation
json2yaml myfile.json --depth 8
# Save the output inside a file called myfile.json with 4 spaces for each indentation
json2yaml myfile.json --indentation 4
# Watch a full directory and convert any JSON file into its YAML equivalent
json2yaml mydirectory --pretty --save --recursive
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