const regex = /(^([0-9[:punct:]0-9]+|\p{No}|\d\p{No}) ?\s* ?([0-9[:punct:]0-9]+|\p{No}|\d\p{No})* ?\w* (cup|tsp|tbps|tablespoon|teaspoon|small|medium|pint|ounce|pound))|(^(small|Large|medium|Fresh))/gmi;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(^([0-9[:punct:]0-9]+|\\p{No}|\\d\\p{No}) ?\\s* ?([0-9[:punct:]0-9]+|\\p{No}|\\d\\p{No})* ?\\w* (cup|tsp|tbps|tablespoon|teaspoon|small|medium|pint|ounce|pound))|(^(small|Large|medium|Fresh))', 'gmi')
const str = `Should match:
1 Cups
2 tsp
3 tbps
1/2 tablespoon
3 tablespoons
1 tablespoon
3 teaspoons
1 small
Small chiles
23 Small chiles
1/2 a Small chile
1 1/2 cups kewpie
11/2 cups kewpie
1/3 cup fresh lemon juice
1 medium onion
Large
medium
Freshly
1½ cups Kewpie
½ cups Kewpie
1 pint
4 ounces
1 pound
2 pounds
Should not match:
1 Make the sauce
1 toast the bread
I want to make 1 piece of toast`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions