Beta 7 with some repo names changed.
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+6
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var concatMap = require('../');
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var xs = [ 1, 2, 3, 4, 5, 6 ];
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var ys = concatMap(xs, function (x) {
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return x % 2 ? [ x - 0.1, x, x + 0.1 ] : [];
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});
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console.dir(ys);
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+13
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module.exports = function (xs, fn) {
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var res = [];
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for (var i = 0; i < xs.length; i++) {
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var x = fn(xs[i], i);
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if (isArray(x)) res.push.apply(res, x);
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else res.push(x);
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}
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return res;
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};
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var isArray = Array.isArray || function (xs) {
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return Object.prototype.toString.call(xs) === '[object Array]';
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};
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+88
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{
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"_from": "concat-map@0.0.1",
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"_id": "concat-map@0.0.1",
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"_inBundle": false,
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"_integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
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"_location": "/concat-map",
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"_phantomChildren": {},
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"_requested": {
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"type": "version",
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"registry": true,
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"raw": "concat-map@0.0.1",
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"name": "concat-map",
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"escapedName": "concat-map",
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"rawSpec": "0.0.1",
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"saveSpec": null,
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"fetchSpec": "0.0.1"
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},
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"_requiredBy": [
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"/brace-expansion"
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],
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"_resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
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"_shasum": "d8a96bd77fd68df7793a73036a3ba0d5405d477b",
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"_spec": "concat-map@0.0.1",
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"_where": "C:\\Users\\Luis\\source\\repos\\AAMasters\\BackendServers\\node_modules\\brace-expansion",
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"author": {
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"name": "James Halliday",
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"email": "mail@substack.net",
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"url": "http://substack.net"
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},
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"bugs": {
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"url": "https://github.com/substack/node-concat-map/issues"
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},
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"bundleDependencies": false,
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"deprecated": false,
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"description": "concatenative mapdashery",
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"devDependencies": {
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"tape": "~2.4.0"
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},
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"directories": {
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"example": "example",
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"test": "test"
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},
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"homepage": "https://github.com/substack/node-concat-map#readme",
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"keywords": [
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"concat",
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"concatMap",
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"map",
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"functional",
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"higher-order"
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],
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"license": "MIT",
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"main": "index.js",
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"name": "concat-map",
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"repository": {
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"type": "git",
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"url": "git://github.com/substack/node-concat-map.git"
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},
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"scripts": {
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"test": "tape test/*.js"
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},
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"testling": {
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"files": "test/*.js",
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"browsers": {
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"ie": [
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6,
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7,
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8,
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9
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],
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"ff": [
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3.5,
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10,
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15
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],
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"chrome": [
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10,
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22
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],
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"safari": [
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5.1
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],
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"opera": [
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12
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]
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}
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},
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"version": "0.0.1"
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}
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+39
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var concatMap = require('../');
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var test = require('tape');
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test('empty or not', function (t) {
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var xs = [ 1, 2, 3, 4, 5, 6 ];
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var ixes = [];
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var ys = concatMap(xs, function (x, ix) {
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ixes.push(ix);
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return x % 2 ? [ x - 0.1, x, x + 0.1 ] : [];
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});
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t.same(ys, [ 0.9, 1, 1.1, 2.9, 3, 3.1, 4.9, 5, 5.1 ]);
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t.same(ixes, [ 0, 1, 2, 3, 4, 5 ]);
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t.end();
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});
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test('always something', function (t) {
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var xs = [ 'a', 'b', 'c', 'd' ];
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var ys = concatMap(xs, function (x) {
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return x === 'b' ? [ 'B', 'B', 'B' ] : [ x ];
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});
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t.same(ys, [ 'a', 'B', 'B', 'B', 'c', 'd' ]);
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t.end();
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});
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test('scalars', function (t) {
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var xs = [ 'a', 'b', 'c', 'd' ];
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var ys = concatMap(xs, function (x) {
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return x === 'b' ? [ 'B', 'B', 'B' ] : x;
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});
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t.same(ys, [ 'a', 'B', 'B', 'B', 'c', 'd' ]);
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t.end();
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});
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test('undefs', function (t) {
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var xs = [ 'a', 'b', 'c', 'd' ];
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var ys = concatMap(xs, function () {});
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t.same(ys, [ undefined, undefined, undefined, undefined ]);
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t.end();
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});
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