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browserifyのrequireに指定できるのは文字列リテラルだけ

Last updated at Posted at 2018-04-23

以下のいずれも実行時に「Uncaught Error: Cannot find module」が発生する

var validPath = './util';
var util = require(validPath);
var util = require('./' + 'util');

上記のように書くとbrowserify結果ファイルの例の

},{"./aaa":9,"./bbb":15,"./util":49}],4:[function(require,module,exports){

みたいなやつが

},{"./aaa":9,"./bbb":15}],4:[function(require,module,exports){

となってしまう

以下によればそういうもんみたいなのであきらめるしかない
https://github.com/browserify/browserify/issues/664#issuecomment-35615649

browserify doesn't work with conditional requires and can't be made to work with arbitrary dynamic requires without solving the halting problem first. Do something different instead. This is a dead end.

あきらめられなかったので続き → browserify前にrequireのパスを正規表現で置換

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