@babel/template crash when trying to parse template literal with an upper case variables #8723
Description
Bug Report
Current Behavior
Execution of template with a template literal with uppercase variable DDD - crashes. If I am changing variable name to ddd - it works.
Input Code
Thist code crashes in the node repl:
const tpl = require('@babel/template').default;
tpl('`test test ${DDD}`')()this one works:
const tpl = require('@babel/template').default;
tpl('`test test ${ddd}`')()Expected behavior/code
Should create an object with ast property.
Babel Configuration (.babelrc, package.json, cli command)
Was running this code in a repl without any additional babel configurations.
Environment
- Babel version(s): 7.1.0
- @babel/template 7.1.0
- Node/npm version: Node 8.9.1/npm 5.5.1
- OS: Ubuntu 14.04
- Monorepo [no]
Additional context/Screenshots
That actually worked in version 6.x and started failing in 7.x.
In my case, I was able to fix that with calling the ast func:
const tpl = require('@babel/template').default;
tpl.ast('`test test ${DDD}`')
Stack trace:
TypeError: @babel/template placeholder "DDD": Property expressions[0] of TemplateLiteral expected node to be of a type ["Expression"] but instead got null
at validate (/home/a.mostovenko/git/babel-plugin-ttag/node_modules/@babel/types/lib/definitions/utils.js:128:13)
at validator (/home/a.mostovenko/git/babel-plugin-ttag/node_modules/@babel/types/lib/definitions/utils.js:97:7)
at Object.validate (/home/a.mostovenko/git/babel-plugin-ttag/node_modules/@babel/types/lib/definitions/utils.js:172:7)
at Object.validate (/home/a.mostovenko/git/babel-plugin-ttag/node_modules/@babel/types/lib/validators/validate.js:17:9)
at applyReplacement (/home/a.mostovenko/git/babel-plugin-ttag/node_modules/@babel/template/lib/populate.js:130:9)
at metadata.placeholders.slice.reverse.forEach.placeholder (/home/a.mostovenko/git/babel-plugin-ttag/node_modules/@babel/template/lib/populate.js:42:7)
at Array.forEach (<anonymous>)
at populatePlaceholders (/home/a.mostovenko/git/babel-plugin-ttag/node_modules/@babel/template/lib/populate.js:40:43)
at arg (/home/a.mostovenko/git/babel-plugin-ttag/node_modules/@babel/template/lib/string.js:22:51)
at arg (/home/a.mostovenko/git/babel-plugin-ttag/node_modules/@babel/template/lib/builder.js:77:14)
=============
at repl:1:1
at ContextifyScript.Script.runInThisContext (vm.js:50:33)
at REPLServer.defaultEval (repl.js:240:29)
at bound (domain.js:301:14)
at REPLServer.runBound [as eval] (domain.js:314:12)
at REPLServer.onLine (repl.js:441:10)
at emitOne (events.js:121:20)
at REPLServer.emit (events.js:211:7)