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annotate third_party/bun/node_modules/loose-envify/replace.js @ 215:c3df85159b31

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removed a python library that isn't used for much.
author June Park <parkjune1995@gmail.com>
date Sat, 28 Feb 2026 20:34:18 -0800
parents de54585a40f1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 'use strict';
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2
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3 var jsTokens = require('js-tokens').default;
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4
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5 var processEnvRe = /\bprocess\.env\.[_$a-zA-Z][$\w]+\b/;
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6 var spaceOrCommentRe = /^(?:\s|\/[/*])/;
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7
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8 function replace(src, envs) {
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9 if (!processEnvRe.test(src)) {
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10 return src;
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11 }
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12
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13 var out = [];
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14 var purge = envs.some(function(env) {
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15 return env._ && env._.indexOf('purge') !== -1;
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16 });
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17
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18 jsTokens.lastIndex = 0
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19 var parts = src.match(jsTokens);
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20
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21 for (var i = 0; i < parts.length; i++) {
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22 if (parts[i ] === 'process' &&
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23 parts[i + 1] === '.' &&
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24 parts[i + 2] === 'env' &&
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25 parts[i + 3] === '.') {
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26 var prevCodeToken = getAdjacentCodeToken(-1, parts, i);
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27 var nextCodeToken = getAdjacentCodeToken(1, parts, i + 4);
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28 var replacement = getReplacementString(envs, parts[i + 4], purge);
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29 if (prevCodeToken !== '.' &&
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30 nextCodeToken !== '.' &&
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31 nextCodeToken !== '=' &&
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32 typeof replacement === 'string') {
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33 out.push(replacement);
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34 i += 4;
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35 continue;
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36 }
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37 }
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38 out.push(parts[i]);
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39 }
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40
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41 return out.join('');
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42 }
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43
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44 function getAdjacentCodeToken(dir, parts, i) {
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45 while (true) {
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46 var part = parts[i += dir];
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47 if (!spaceOrCommentRe.test(part)) {
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48 return part;
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49 }
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50 }
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51 }
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52
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53 function getReplacementString(envs, name, purge) {
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54 for (var j = 0; j < envs.length; j++) {
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55 var env = envs[j];
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56 if (typeof env[name] !== 'undefined') {
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57 return JSON.stringify(env[name]);
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58 }
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59 }
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60 if (purge) {
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61 return 'undefined';
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62 }
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63 }
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64
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65 module.exports = replace;