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‎.babelrc.js

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module.exports = api => ({
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presets: [
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[
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'@4c/4catalyzer',
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{
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target: 'web',
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modules: api.env() === 'esm' ? false : 'commonjs'
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},
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],
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]
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});
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‎.eslintignore

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lib/
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es/
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**/node_modules/**
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**/fixtures/**
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**/package.json
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**/CHANGELOG.md

‎.eslintrc

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{
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"extends": ["4catalyzer-react", "prettier"],
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"plugins": ["prettier"],
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"rules": {
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"prettier/prettier": "error"
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},
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"env": {
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"browser": true
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},
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"overrides": [
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{
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"files": ["test/**"],
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"plugins": ["jest"],
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"env": {
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"jest/globals": true
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},
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"rules": {
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"global-require": "off",
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"no-await-in-loop": "off",
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"no-console": "off",
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"import/no-dynamic-require": "off",
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"jest/no-disabled-tests": "warn",
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"jest/no-focused-tests": "error",
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"jest/no-identical-title": "error",
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"jest/prefer-to-have-length": "warn",
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"jest/valid-expect": "error",
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"react/no-multi-comp": "off"
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}
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}
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]
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}

‎.gitignore

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lib/
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es/
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# Logs
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logs
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*.log
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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# Runtime data
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pids
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*.pid
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*.seed
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*.pid.lock
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# Directory for instrumented libs generated by jscoverage/JSCover
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lib-cov
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# Coverage directory used by tools like istanbul
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coverage
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# nyc test coverage
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.nyc_output
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# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
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.grunt
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# Bower dependency directory (https://bower.io/)
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bower_components
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# node-waf configuration
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.lock-wscript
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# Compiled binary addons (http://nodejs.org/api/addons.html)
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build/Release
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# Dependency directories
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node_modules/
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jspm_packages/
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# Typescript v1 declaration files
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typings/
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# Optional npm cache directory
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.npm
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# Optional eslint cache
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.eslintcache
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# Optional REPL history
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.node_repl_history
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# Output of 'npm pack'
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*.tgz
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# Yarn Integrity file
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.yarn-integrity
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# dotenv environment variables file
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.env
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‎.travis.yml

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sudo: false
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language: node_js
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node_js:
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- '9'
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- '8'
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after_script:
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- yarn codecov
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after_success:
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- yarn semantic-release
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cache: yarn
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branches:
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only:
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- master

‎package.json

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{
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"name": "@4c/context",
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"version": "0.0.0-development",
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"main": "lib/index.js",
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"modules": "es/index.js",
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"jsnext:main": "es/index.js",
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"repository": {
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"type": "git",
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"url": "https://github.com/4Catalyzer/context.git"
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},
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"author": "4Catalyzer",
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"license": "MIT",
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"scripts": {
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"tdd": "jest --watch",
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"test": "npm run lint && jest",
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"testonly": "jest",
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"build:es": "babel src -d es --env-name esm --ignore **/__tests__ --delete-dir-on-start",
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"build:lib": "babel src -d lib --ignore **/__tests__ --delete-dir-on-start",
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"build": "npm run build:lib && npm run build:es",
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"prepublishOnly": "yarn run build",
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"lint": "eslint . && prettier --list-different --ignore-path .eslintignore '**/*.{json,css,md}'",
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"format": "eslint . --fix && prettier --write --ignore-path .eslintignore '**/*.{json,css,md}'",
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"precommit": "lint-staged",
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"travis-deploy-once": "travis-deploy-once",
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"semantic-release": "semantic-release"
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},
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"publishConfig": {
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"access": "public"
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},
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"prettier": {
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"printWidth": 79,
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"singleQuote": true,
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"trailingComma": "all"
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},
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"lint-staged": {
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"*.js": [
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"eslint --fix",
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"git add"
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],
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"*.{json,css,md}": [
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"prettier --write --ignore-path .eslintignore",
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"git add"
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]
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},
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"jest": {
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"roots": [
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"<rootDir>/test"
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],
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"testEnvironment": "jsdom",
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"setupFiles": [
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"<rootDir>/test/index.js"
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]
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},
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"release": {
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"extends": [
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"@4c/semantic-release-config"
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]
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},
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"devDependencies": {
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"@4c/babel-preset-4catalyzer": "^1.0.0",
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"@4c/semantic-release-config": "^1.0.2",
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"@babel/cli": "^7.0.0-beta.39",
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"@babel/core": "^7.0.0-beta.39",
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"@monastic.panic/enzyme-adapter-react-16": "^1.2.2",
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"babel-core": "bridge",
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"babel-eslint": "^8.2.1",
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"babel-jest": "^22.4.3",
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"codecov": "^3.0.2",
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"enzyme": "^3.3.0",
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"eslint": "^4.16.0",
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"eslint-config-4catalyzer-react": "^0.4.1",
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"eslint-config-prettier": "^2.9.0",
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"eslint-plugin-import": "^2.8.0",
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"eslint-plugin-jest": "^21.7.0",
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"eslint-plugin-jsx-a11y": "^6.0.3",
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"eslint-plugin-prettier": "^2.5.0",
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"eslint-plugin-react": "^7.5.1",
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"husky": "^0.14.3",
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"lint-staged": "^7.1.0",
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"prettier": "^1.10.2",
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"react": "^16.3.2",
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"react-dom": "^16.3.2",
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"semantic-release": "^15.4.0",
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"travis-deploy-once": "^5.0.0"
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},
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"peerDependencies": {
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"react": ">=16.3.2"
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}
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}

‎src/index.js

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export { mapContextToProps } from './mapContextToProps';

‎src/mapContextToProps.js

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import React from 'react';
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const getDisplayName = Component => {
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const name =
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typeof Component === 'string'
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? Component
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: Component.name || Component.displayName;
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return name ? `ContextTransform(${name})` : 'ContextTransform';
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};
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function $mapContextToProps(
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{
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consumers: maybeArrayOfConsumers,
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mapToProps,
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displayName,
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forwardRefAs = 'ref',
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},
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Component,
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) {
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let consumers = maybeArrayOfConsumers;
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if (!Array.isArray(maybeArrayOfConsumers)) {
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consumers = [maybeArrayOfConsumers];
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}
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const SingleConsumer = consumers[0];
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function singleRender(props, ref) {
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const propsWithRef = { [forwardRefAs]: ref, ...props };
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return (
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<SingleConsumer>
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{value => (
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<Component {...propsWithRef} {...mapToProps(value, props)} />
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)}
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</SingleConsumer>
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);
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}
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function multiRender(props, ref) {
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const propsWithRef = { [forwardRefAs]: ref, ...props };
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return consumers.reduceRight(
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(inner, Consumer) => (...args) => (
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<Consumer>{value => inner(...args, value)}</Consumer>
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),
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(...contexts) => (
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<Component {...propsWithRef} {...mapToProps(...contexts, props)} />
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),
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)();
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}
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const contextTransform = consumers.length === 1 ? singleRender : multiRender;
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contextTransform.displayName = displayName || getDisplayName(Component);
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return React.forwardRef(contextTransform);
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}
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export default function mapContextToProps(maybeOpts, mapToProps, Component) {
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if (arguments.length === 2) return $mapContextToProps(maybeOpts, mapToProps);
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return $mapContextToProps({ consumers: maybeOpts, mapToProps }, Component);
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}

‎test/index.js

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import { configure } from 'enzyme';
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import Adapter from '@monastic.panic/enzyme-adapter-react-16';
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configure({ adapter: new Adapter() });

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