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author | Florian Dold <florian.dold@gmail.com> | 2016-10-10 03:43:44 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2016-10-10 03:43:44 +0200 |
commit | abd94a7f5a50f43c797a11b53549ae48fff667c3 (patch) | |
tree | ab8ed457f65cdd72e13e0571d2975729428f1551 /node_modules/loose-envify/replace.js | |
parent | a0247c6a3fd6a09a41a7e35a3441324c4dcb58be (diff) | |
download | wallet-core-abd94a7f5a50f43c797a11b53549ae48fff667c3.tar.xz |
add node_modules to address #4364
Diffstat (limited to 'node_modules/loose-envify/replace.js')
-rw-r--r-- | node_modules/loose-envify/replace.js | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/node_modules/loose-envify/replace.js b/node_modules/loose-envify/replace.js new file mode 100644 index 000000000..036009099 --- /dev/null +++ b/node_modules/loose-envify/replace.js @@ -0,0 +1,65 @@ +'use strict'; + +var jsTokens = require('js-tokens'); + +var processEnvRe = /\bprocess\.env\.[_$a-zA-Z][$\w]+\b/; +var spaceOrCommentRe = /^(?:\s|\/[/*])/; + +function replace(src, envs) { + if (!processEnvRe.test(src)) { + return src; + } + + var out = []; + var purge = envs.some(function(env) { + return env._ && env._.indexOf('purge') !== -1; + }); + + jsTokens.lastIndex = 0 + var parts = src.match(jsTokens); + + for (var i = 0; i < parts.length; i++) { + if (parts[i ] === 'process' && + parts[i + 1] === '.' && + parts[i + 2] === 'env' && + parts[i + 3] === '.') { + var prevCodeToken = getAdjacentCodeToken(-1, parts, i); + var nextCodeToken = getAdjacentCodeToken(1, parts, i + 4); + var replacement = getReplacementString(envs, parts[i + 4], purge); + if (prevCodeToken !== '.' && + nextCodeToken !== '.' && + nextCodeToken !== '=' && + typeof replacement === 'string') { + out.push(replacement); + i += 4; + continue; + } + } + out.push(parts[i]); + } + + return out.join(''); +} + +function getAdjacentCodeToken(dir, parts, i) { + while (true) { + var part = parts[i += dir]; + if (!spaceOrCommentRe.test(part)) { + return part; + } + } +} + +function getReplacementString(envs, name, purge) { + for (var j = 0; j < envs.length; j++) { + var env = envs[j]; + if (typeof env[name] !== 'undefined') { + return JSON.stringify(env[name]); + } + } + if (purge) { + return 'undefined'; + } +} + +module.exports = replace; |