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[parser] Exception to 8 and 9 in tagged template #10567

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Merged
nicolo-ribaudo merged 1 commit into from
Oct 16, 2019
Merged

[parser] Exception to 8 and 9 in tagged template #10567

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8 changes: 8 additions & 0 deletions packages/babel-parser/src/tokenizer/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1239,6 +1239,14 @@ export default class Tokenizer extends LocationParser {
case charCodes.lineSeparator:
case charCodes.paragraphSeparator:
return "";
case charCodes.digit8:
case charCodes.digit9:
if (inTemplate) {
const codePos = this.state.pos - 1;

this.state.invalidTemplateEscapePosition = codePos;
return null;
}
default:
if (ch >= charCodes.digit0 && ch <= charCodes.digit7) {
const codePos = this.state.pos - 1;
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1 change: 1 addition & 0 deletions packages/babel-parser/test/fixtures/core/escape-template/non-octal/eight/input.js
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@@ -0,0 +1 @@
`\8`;
3 changes: 3 additions & 0 deletions packages/babel-parser/test/fixtures/core/escape-template/non-octal/eight/options.json
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@@ -0,0 +1,3 @@
{
"throws": "Invalid escape sequence in template (1:2)"
}
1 change: 1 addition & 0 deletions packages/babel-parser/test/fixtures/core/escape-template/non-octal/nine/input.js
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@@ -0,0 +1 @@
`\9`;
3 changes: 3 additions & 0 deletions packages/babel-parser/test/fixtures/core/escape-template/non-octal/nine/options.json
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@@ -0,0 +1,3 @@
{
"throws": "Invalid escape sequence in template (1:2)"
}