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Initial commit

master
Sven Slootweg 5 years ago
parent
commit
7a6a7ef816
  1. 1
      .npmignore
  2. 29
      README.md
  3. 18
      gulpfile.js
  4. 3
      index.js
  5. 26
      package.json
  6. 35
      src/index.js
  7. 21
      test.js

1
.npmignore

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/node_modules/

29
README.md

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# default-value
TODO
## License
[WTFPL](http://www.wtfpl.net/txt/copying/) or [CC0](https://creativecommons.org/publicdomain/zero/1.0/), whichever you prefer. A donation and/or attribution are appreciated, but not required.
## Donate
My income consists largely of donations for my projects. If this module is useful to you, consider [making a donation](http://cryto.net/~joepie91/donate.html)!
You can donate using Bitcoin, PayPal, Flattr, cash-in-mail, SEPA transfers, and pretty much anything else.
## Contributing
Pull requests welcome. Please make sure your modifications are in line with the overall code style, and ensure that you're editing the files in `src/`, not those in `lib/`.
Build tool of choice is `gulp`; simply run `gulp` while developing, and it will watch for changes.
Be aware that by making a pull request, you agree to release your modifications under the licenses stated above.
## Usage
TODO
## API
TODO

18
gulpfile.js

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var gulp = require("gulp");
var presetES2015 = require("@joepie91/gulp-preset-es2015");
var source = ["src/**/*.js"]
gulp.task('babel', function() {
return gulp.src(source)
.pipe(presetES2015({
basePath: __dirname
}))
.pipe(gulp.dest("lib/"));
});
gulp.task("watch", function () {
gulp.watch(source, ["babel"]);
});
gulp.task("default", ["babel", "watch"]);

3
index.js

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'use strict';
module.exports = require("./lib");

26
package.json

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{
"name": "default-value",
"version": "0.0.1",
"description": "Lets you easily define a default value for undefined options, with optional support for Promises",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"repository": {
"type": "git",
"url": "http://git.cryto.net/joepie91/node-default-value.git"
},
"keywords": [
"default"
],
"author": "Sven Slootweg",
"license": "WTFPL",
"dependencies": {
"es6-promise-try": "0.0.1"
},
"devDependencies": {
"@joepie91/gulp-preset-es2015": "^1.0.1",
"babel-preset-es2015": "^6.6.0",
"gulp": "^3.9.1"
}
}

35
src/index.js

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'use strict';
const promiseTry = require("es6-promise-try");
function evaluateValue(value) {
if (typeof value === "function") {
return value();
} else {
return value;
}
}
function defaultValue(value, fallbackValue) {
value = evaluateValue(value);
if (value != null) {
return value;
} else {
return evaluateValue(fallbackValue);
}
}
defaultValue.async = function defaultAsyncValue(value, fallbackValue) {
return promiseTry(() => {
return evaluateValue(value);
}).then((resultValue) => {
if (resultValue != null) {
return resultValue;
} else {
return evaluateValue(fallbackValue);
}
})
}
module.exports = defaultValue;

21
test.js

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'use strict';
const promiseTry = require("es6-promise-try");
const defaultValue = require("./");
function promiseThatReturns(value) {
return Promise.resolve(value);
}
console.log(defaultValue(null, () => 4));
console.log(defaultValue("foo", "bar"));
promiseTry(() => {
return Promise.all([
defaultValue.async(promiseThatReturns(undefined), promiseThatReturns(Infinity)),
defaultValue.async(() => promiseThatReturns("baz"), promiseThatReturns("qux"))
]);
}).then((results) => {
console.log(results[0]);
console.log(results[1]);
})
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